NSEJS 2025 23rd Nov Question Paper

NSEJS 2025 23rd Nov - Question 1

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Which National Park derives its name from the abundance of Red Silk Cotton Trees?

A

Keoladeo

B

Simlipal

C

Sunderban

D

Kaziranga

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NSEJS 2025 23rd Nov - Question 2

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Some algae live as endophytes in sea-weeds. Which of the following alga is endophytic to the aquatic fern, $$\textit{Azolla}$$?

A

Sarcodia

B

Anabaena

C

Nostoc

D

Chondrus

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NSEJS 2025 23rd Nov - Question 3

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St. $$Anthony's $$ Fire disease is caused by consumption of infected grains of rye. Which of the following is responsible for this disease?

A

Candida

B

Aspergillus

C

Russula

D

Claviceps

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NSEJS 2025 23rd Nov - Question 4

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Given below are two statements, one labeled as Assertion (A) and the other labeled as Reason (R).
Choose the correct option from the codes given below.
Assertion (A): Each of the two strands of the original DNA molecule serves as a template for the
synthesis of a new complementary strand. The result is two DNA molecules, each composed of one old
(parental) strand and one new (daughter) strand.
Reason (R): During replication, the original DNA molecule is broken into fragments and each fragment is
replicated. The newly synthesized DNA fragments and the original fragments are then interspersed,
resulting in both strands of the daughter DNA containing a mix of old (parental) and new (daughter)
DNA segments.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true but R is not the correct explanation of A

C

A is true but R is false

D

R is true but A is false

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NSEJS 2025 23rd Nov - Question 5

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Who among the following is the launching leader of the Human Genome Project?

A

Alec Jeffreys

B

Francis Collins

C

Craig Venter

D

John Sulston and Bob Waterston

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NSEJS 2025 23rd Nov - Question 6

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Which of the following is often referred to as the Old Man of the Jungle?

A

Orangutan

B

Gibbon

C

Gorilla

D

Chimpanzee

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NSEJS 2025 23rd Nov - Question 7

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In the following experimental set-up, a twig of a succulent plant $$\textit{Crassula}$$ was inserted in the glass tube. The apparatus was kept in sunlight for 6 hours. The inserted bubble will

A

Move very fast to show high rate of transpiration.

B

Move slowly to show lower rate of transpiration.

C

Not move at all.

D

Move according to temperature of water.

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NSEJS 2025 23rd Nov - Question 8

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Make the correct matches of the items M, N, O and P with (i) - (iv)

Choose the option showing correct matches:

A

M- (ii), N- (iii), O- (i), P- (iv)

B

M- (iv), N- (iii), O- (ii), P- (i)

C

M- (iii), N- (i), O- (iv), P- (ii)

D

M- (i), N- (iii), O- (ii), P- (iv)

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NSEJS 2025 23rd Nov - Question 9

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Singly or in combination with other nucleotides, which of the following produce co-enzymes for oxidation-reduction reactions?

A

Vitamin B2 and B5

B

Vitamin B1 and B3

C

Vitamin B2 and B6

D

Vitamin B7 and B9

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NSEJS 2025 23rd Nov - Question 10

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Match the characteristics (V-Z) listed in Column I with the Groups (i-v) listed under
Column II:

Choose the option showing the correct matches:

A

V-iii, W-i, X-v, Y-ii and Z-iv

B

V-iv, W-iii, X-ii, Y-i and Z-v

C

V-i, W-ii, X-iv, Y-v and Z-iii

D

V-v, W-iv, X-iii, Y-ii and Z-i

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NSEJS 2025 23rd Nov - Question 11

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In the animal Kingdom some examples of structures (internal or external) with similar name and function
are found in distantly related animals. This is a fascinating example of convergent evolution. Choose the
correct option exhibiting such similarity by possessing an organ called ‘CROP’:

A

Taenia, Prawn and Toad

B

Earthworm, Nereis and Balanoglossus

C

Leech, Cockroach and Bird

D

Ascaris, Crab and Fish

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NSEJS 2025 23rd Nov - Question 12

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Identify the animals X and Y. Choose the correct option showing their diagnostic characteristic of scales.

A

X-Ctenoid Scale; Y-Cycloid Scale

B

X-Placoid Scale; Y-Ctenoid Scale

C

X-Ganoid Scale; Y-Cosmoid Scale

D

X-Elasmoid Scale; Y-Placoid Scale

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NSEJS 2025 23rd Nov - Question 13

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Which of the following is not only the most abundant biopolymer on earth but a Nitrogenous Polysaccharide, too?

A

Inulin

B

Hyaluronic Acid

C

Chitin

D

Trehalose

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NSEJS 2025 23rd Nov - Question 14

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The mathematical relationship called Fibonacci Series is commonly observed in the arrangement of

A

Stipules on twig

B

Leaves

C

Stamens

D

Flowers in an inflorescence

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NSEJS 2025 23rd Nov - Question 15

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Santalin, Red Brasilin and Haematoxylin dyes are naturally found in

A

Alburnum

B

Rhytidome

C

Duramen

D

Phelloderm

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NSEJS 2025 23rd Nov - Question 16

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Although, profiles of different types of soil differ markedly with respect to their physico-chemical and
biological properties; the following diagram shows a typical hypothetical soil profile with its 5 principal
horizons [O to R].

Study the given diagram. The characteristics [Q to U] related to various horizons and the names of
horizons [i to v] are tabulated below:

Make the correct matches of the characteristics [Q to U] with the horizons [i to v] and choose the correct
option:

A

Q-i, R-iv, S-v, T-iii, U-ii

B

Q-v, R-ii, S-iv, T-iii, U-i

C

Q-iii, R-v, S-i, T-ii, U-iv

D

Q-ii, R-iv, S-iii, T-i, U-v

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NSEJS 2025 23rd Nov - Question 17

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A mixture of hydrogen and chlorine kept in a closed flask at constant temperature was irradiated with scattered light. After a certain time the chlorine content decreased by 20 $$\%$$ compared with the starting mixture and the resulting mixture had 60 volume $$\%$$ chlorine, 10 volume $$\%$$ hydrogen and 30 volume $$\%$$ hydrogen chloride. Determine the composition of the initial gaseous mixture.

A

$$\mathrm{Cl_2}$$ = 60 $$\%$$, $$\mathrm{H_2}$$ = 40 $$\%$$

B

$$\mathrm{H_2}$$ = 60 $$\%$$, $$\mathrm{Cl_2}$$ = 40 $$\%$$

C

$$\mathrm{Cl_2}$$ = 45 $$\%$$, $$\mathrm{H_2}$$ = 55 $$\%$$

D

$$\mathrm{H_2}$$ = 25 $$\%$$, $$\mathrm{Cl_2}$$ = 75 $$\%$$

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NSEJS 2025 23rd Nov - Question 18

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A research scholar requires 50 mL aqueous $$\mathrm{NaNO_3}$$ solution containing 70.0 mg Na+ per mL. The amount of $$\mathrm{NaNO_3}$$ required is

A

0.350 g

B

0.161 g

C

29.75 g

D

12.93 g

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NSEJS 2025 23rd Nov - Question 19

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A sample of crystalline soda (A) with a mass of 1.287 g was allowed to react with excess hydrochloric acid and 100.8 mL of gas was liberated at STP. How many molecules of water in relation to one molecule of $$\mathrm{Na_2CO_3}$$ are contained in the sample of soda? Relative atomic masses are Na = 23, H = 1, C = 12 and O = 16.

A

5

B

6

C

4

D

10

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NSEJS 2025 23rd Nov - Question 20

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Which of the following ammonium salts release $$\mathrm{SO_3}$$ gas on thermal decomposition. 

A

I only

B

II only

C

Both I and II

D

None of these

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NSEJS 2025 23rd Nov - Question 21

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Which of the following group contains solid compounds at $$10^\circ\mathrm{C}$$?

A

$$\mathrm{H_2}$$O, $$\mathrm{NH_3}$$, $$\mathrm{CH_4}$$

B

$$\mathrm{F_2}$$, $$\mathrm{Cl_2}$$, $$\mathrm{Br_2}$$

C

$$\mathrm{SO_3}$$, $$\mathrm{I_2}$$, $$\mathrm{NaCl}$$

D

Si, $$\mathrm{S_8}$$, $$\mathrm{CH_3COCH_3}$$

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NSEJS 2025 23rd Nov - Question 22

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How many primary 1 degree are possible for $$\mathrm{C_5H_{13}N}$$?

A

6

B

7

C

8

D

9

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NSEJS 2025 23rd Nov - Question 23

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For the compound given below, the correct increasing order of $$C-H$$ bond strength is

A

$$ C-H_{a} $$  > $$ C-H_{b} $$ >  $$ C-H_{c} $$

B

$$ C-H_{a} $$  >  $$ C-H_{c} $$ > $$ C-H_{b} $$

C

$$C-H_{b} $$ > $$ C-H_{a} $$ > $$ C-H_{c} $$

D

$$ C-H_{c} $$ > $$ C-H_{a} $$ > $$ C-H_{b} $$

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NSEJS 2025 23rd Nov - Question 24

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Consider the $$C-O$$ bonds x, y and z present in the compound given below. The increasing order of $$C-O$$ bond length is

A

x = y = z

B

x < y < z

C

x < z < y

D

y < x < z

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NSEJS 2025 23rd Nov - Question 25

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The correct order of the bond energy of different $$C-H$$ bonds in the given compound is

A

C-H1 > C-H2 > C-H3

B

C-H2 > C-H1 > C-H3

C

C-H3 > C-H2 > C-H1

D

C-H3 > C-H1 > C-H2

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NSEJS 2025 23rd Nov - Question 26

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The total number of moles of $$\mathrm{NaHCO_3}$$ consumed during the given reaction is x. The value of x is

A

1

B

2

C

3

D

4

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NSEJS 2025 23rd Nov - Question 27

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If 1 mL of water contains 20 drops, the number of water molecules in each drop of water is, where A is Avogadro number.

A

$$\frac{0.5A}{18}$$

B

$$0.05A$$

C

$$0.5A$$

D

$$\frac{0.05A}{18}$$

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NSEJS 2025 23rd Nov - Question 28

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In which of the below given sets, all types of bonds ionic, covalent and coordinate are present in all the molecules?

A

HCN, HNO3, O3

B

KNO3, HNO3, CuSO4 . 5$$\mathrm{H_2}$$O

C

NH4Cl, KNO3, CuSO4 . 5$$\mathrm{H_2}$$O

D

Both b and c

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NSEJS 2025 23rd Nov - Question 29

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Which of the following $$C-H$$ bonds has lowest bond dissociation energy?

A

$$3^{o} $$C-H bond

B

$$2 ^{o}$$ C-H bond

C

$$1^{o}$$ C-H bond

D

All have same bond dissociation energy

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NSEJS 2025 23rd Nov - Question 30

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The total number of lone pairs of electrons in $$I_3^-$$ is

A

2

B

3

C

6

D

9

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NSEJS 2025 23rd Nov - Question 31

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The correct order of abstraction of hydrogen from the below given compound when treated with halogen is

A

e > b > c > a > d

B

b > e = c > a > d

C

e > c > d > a > b

D

b > c > e > d > a

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NSEJS 2025 23rd Nov - Question 32

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Which of the following will form foam in water containing $$\mathrm{Ca^{2+}}$$ and $$\mathrm{Mg^{2+}}$$ ions?

A

Ba-stearate

B

Na-palmitate

C

Potassium n-dodecyl benzene sulphonate

D

All of these

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NSEJS 2025 23rd Nov - Question 33

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A student, intending to catch a bus, finds that the bus starts and accelerates away with uniform acceleration $$a=2\text{ m s}^{-2}$$ when he is 16 m far from the bus. He runs with unifor$$\mathrm{m\ s^{-1}}$$peed so as just to catch the bus. The minimu$$\mathrm{m\ s^{-1}}$$peed with which the student must run is

A

$$2.0\text{ m s}^{-1}$$

B

$$4.0\text{ m s}^{-1}$$

C

$$8.0\text{ m s}^{-1}$$

D

$$16.0\text{ m s}^{-1}$$

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NSEJS 2025 23rd Nov - Question 34

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A block of mass 2.0 $$\mathrm{kg}$$ is suspended from the ceiling by a massless string. The string is taut when the block is stationary. Suddenly, the string breaks and the block starts falling freely. The difference in the tension in the string just before and after it breaks is

A

9.8 N

B

19.6 N

C

4.9 N

D

zero

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NSEJS 2025 23rd Nov - Question 35

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Having been paddled continuously on a horizontal road, the speed of a bicycle is increasing. The force of friction exerted by the ground on the wheels is

A

in the backward direction on both the wheels

B

in the forward direction on both the wheels

C

in the forward direction on the front wheel and in the backward direction on the rear wheel

D

in the backward direction on the front wheel and in the forward direction on the rear wheel

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NSEJS 2025 23rd Nov - Question 36

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A current $$i=2\text{ amp }$$ is established through the long straight conductors which are the arms of a hairpin
like structure placed in the plane of paper as shown in the figure. Knowing that a current carrying
conductor produces magnetic field represented by the lines of force, analyze the situations described
The correct option is

A

The magnetic field at point P is directed outward, normal to the plane of paper

B

The magnetic field at point Q is directed inward, normal to the plane of paper

C

The magnetic field at point Z is directed normal to the line PQ in the plane of paper

D

No magnetic field is produced outside the hairpin at points M and N

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NSEJS 2025 23rd Nov - Question 37

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A certain water pump rated 500 watt lifts water from ground level to a height $$h=10\text{ m}$$ at a rate of 240 $$\mathrm{kg}$$ per minute. Ignoring kinetic energy, the efficiency of the water pump is

A

74.8 $$\%$$

B

78.4 $$\%$$

C

84.7 $$\%$$

D

87.4 $$\%$$

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NSEJS 2025 23rd Nov - Question 38

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An electric kettle consists of two filaments F1 and F2 of different resistances 𝑅1 and 𝑅2 respectively,
connected in parallel with separate switches. With a certain fixed amount of water in the kettle pot to
prepare the tea, when only F1 is switched on, it takes 4 minute to boil the water. When F1 and F2 both are
switched on simultaneously, it takes 3 minute to boil the same amount of water up to the same
temperature. The time taken to boil the same amount of water when only F2 is switched on (assume that
entire heat radiated by filaments is used in boiling the water starting from the same room temperature in
each case) is

A

7.0 min

B

8.4 min

C

9.6 min

D

12.0 min

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NSEJS 2025 23rd Nov - Question 39

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Two filament bulbs $$B_1$$ of 100 W and 220 V and $$B_2$$ of 60 W and 220 V are connected in series with a 440 V supply. When switched on, the bulb

A

$$B_1$$ will fuse and $$B_2$$ will not fuse

B

$$B_1$$ will not fuse and $$B_2$$ will fuse

C

$$B_1$$ and $$B_2$$ both will fuse at the same instant

D

$$B_1$$ and $$B_2$$ both will not fuse

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NSEJS 2025 23rd Nov - Question 40

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The volume of water spilled out of a completely filled cubic container of side 4 m when the container is accelerated horizontally with $$1.96\text{ m s}^{-2}$$ is

A

0

B

12.8 m^3

C

6.4 m^3

D

3.2 m^3

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NSEJS 2025 23rd Nov - Question 41

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Two athletes, A and B, run in the ground on an oval track of length L (say) at 8.0 m/s and 6.0 m/s
respectively in the same direction starting from same initial point. How many laps (rounds) will the athlete
A complete on the track before overtaking athlete B for the first time?

A

2

B

3

C

4

D

5

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NSEJS 2025 23rd Nov - Question 42

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A wooden solid cylinder (density 0.80 kg/m3), a plastic ball (density 0.90 kg/m3) and a rubber cube (density
0.95 kg/m3) all of equal mass M float partly immersed in a trough containing water (density 1.00 kg/m3) as shownbelow (ignore any tilt during floatation).

A

The buoyant force is largest on the wooden cylinder

B

The buoyant force is largest on the plastic ball

C

The buoyant force is largest on the rubber cube

D

The buoyant force is equal on all the three

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NSEJS 2025 23rd Nov - Question 43

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A stone is thrown vertically down into a well, the splash is heard after a time t1. If the stone is thrown
vertically up with the same speed from the same point, the splash is heard after a time t2. The common
initial speed (u) of the stone in both the cases is given by (the time taken by the splash sound to reach the
observer is ignored)

A

$$u=g(t_1-t_2)$$

B

$$u=g(t_1+t_2)$$

C

$$u=\frac{1}{2}g(t_1+t_2)$$

D

$$u=\frac{1}{2}g(t_1-t_2)$$

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NSEJS 2025 23rd Nov - Question 44

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A beam of light is incident parallel to principal axis on a convex lens (L) of focal length f = 20 cm. A
plane mirror PQ (See figure), inclined at 60° with the principal axis, is placed a distance ‘d’ behind the
lens so as to form a real image I of the distant object at a distance ‘d’ from the optical center of the lens as
shown in the figure. The value of ‘d’ is

The value of d is

A

5 $$\mathrm{cm}$$

B

10 $$\mathrm{cm}$$

C

15 $$\mathrm{cm}$$

D

20 $$\mathrm{cm}$$

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NSEJS 2025 23rd Nov - Question 45

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A 80 kg man skating with a speed of 10 m/s on a smooth horizontal surface collides with a 20 kg skater at
rest, as a result the two cling to each other. What percentage of initial kinetic energy of skaters is lost
during the collision? (Ignore any friction)

A

12 $$\%$$

B

18 $$\%$$

C

20 $$\%$$

D

25 $$\%$$

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NSEJS 2025 23rd Nov - Question 46

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Two cylindrical vessels V1 and V2 are placed on the same horizontal level. Each vessel contains the same
liquid of density ρ. Initially the vessels are not connected (valve closed). The height of liquid in vessel V1
is h1 and that in vessel V2 is h2. The diameter of vessels V1 and V2 are 2d and d respectively. When
vessels are interconnected (valve opened) at the bottom, the height h of liquid in each vessel (neglecting
the volume of liquid in connecting tube) will be

A

$$\frac{2h_1+h_2}{3}$$

B

$$\frac{4h_1+h_2}{5}$$

C

$$\frac{h_1+h_2}{2}$$

D

$$\frac{h_1+2h_2}{4}$$

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NSEJS 2025 23rd Nov - Question 47

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Two vertical object pins are located on the principal axis of a thin lens at distances of $$x_{1}$$=  9.0cm and $$x_{2}$$= 18.0cm from the lens on the two sides of the lens. The images of the two pins formed by the lens are at the same position (overlap). The focal length and the nature of the lens are

A

15 $$\mathrm{cm}$$, convex

B

12 $$\mathrm{cm}$$, convex

C

15 $$\mathrm{cm}$$, concave

D

12 $$\mathrm{cm}$$, concave

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NSEJS 2025 23rd Nov - Question 48

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A steam boat goes across a lake up to a distance of 1200 meter and comes back. There is a uniform wind
blowing with velocity v so as to help the onward journey and to impede the journey back. If the uniform
speed of launch of the boat is 5 ms-1 and total time taken by the boat in going and coming back is 500 s,
the velocity v of the wind blow is

A

0.6 $$\mathrm{m\ s^{-1}}$$

B

0.8 $$\mathrm{m\ s^{-1}}$$

C

1.0 $$\mathrm{m\ s^{-1}}$$

D

1.2 $$\mathrm{m\ s^{-1}}$$

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NSEJS 2025 23rd Nov - Question 49

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Fine structure of striated muscle fibres has been elucidated with the help of electron microscope. Study
the following statements and choose the incorrect ones:

A

The dark and light bands of myofibrils have been respectively, named as ‘A’ [Anisotropic under
polarized light] and ‘I’ [Isotropic under polarized light] bands.

B

The A bands contain about 120 angstrom thick and 18 angstrom long actin filaments.

C

Each I band is divided into two equal halves by a thin fibrous transverse zig-zag partition called Z band.

D

The major middle lighter region of A band is called M zone

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NSEJS 2025 23rd Nov - Question 50

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The autonomic nervous system is divided into sympathetic and parasympathetic parts. Some effects are given below. Choose the correct options.

A

Pupil constricts; glycogen converted into glucose

B

Salivation decreases; bladder constricts

C

Adrenaline released; glucose converted into glycogen

D

Bronchii constrict; gastric activity stimulated

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NSEJS 2025 23rd Nov - Question 51

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Study the following statements regarding haemophilia and choose the incorrect options.

A

It follows criss-cross pattern of inheritance

B

It is a Y-linked dominant trait

C

It is common in women but rare in man

D

It is also called royal disease

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NSEJS 2025 23rd Nov - Question 52

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Which of the following trees do not show cheiropterophily?

A

Sausage tree

B

Kadamb

C

Coral tree

D

Silk Cotton

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NSEJS 2025 23rd Nov - Question 53

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The pair(s) or pairs of elements which have equal numbers of electrons in the outermost shell are

A

Na, Sr

B

Se, Te

C

Mn, Fe

D

As, Bi

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NSEJS 2025 23rd Nov - Question 54

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The correct statement or statements are

A

pH of $$10^{-8}\text{ NaOH}$$ is 8

B

pH of $$10^{-8}\text{ HCl}$$ is less than 7

C

Aqueous solution of $$\mathrm{FeCl_3}$$ is acidic

D

Na$$\mathrm{H_2}$$PO2 will react with NaOH to form $$\mathrm{Na_2HPO_2}$$

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NSEJS 2025 23rd Nov - Question 55

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Considering the hydrogen spectrum series, select the correctly matched pairs.

A

Balmer has $$n_{2}$$ > 2

B

Pfund has $$\frac{1}{\lambda}=R\left[\frac{1}{3^2}-\frac{1}{n^2}\right]$$

C

Humphrey has $$n_{1} $$ >6

D

Paschen is in the infrared region

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NSEJS 2025 23rd Nov - Question 56

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Which of the following acids are stronger than benzoic acid?

A

B

C

D

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NSEJS 2025 23rd Nov - Question 57

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A trolley of mass 240 kg is initially at rest on the frictionless horizontal straight rails lying in east-west
direction. The length of the trolley is 20 meter. A man of mass 60 kg is standing at the eastern end of the
trolley. The man starts moving on the trolley from eastern end towards west with velocity 1.0 m/s relative
to the trolley. Assume the displacement and the velocity in eastward direction to be positive.
Choose the correct option.

A

The velocity of man relative to ground is $$-1\text{ m s}^{-1}$$

B

The recoil velocity of the trolley relative to ground is $$+0.2\text{ m s}^{-1}$$

C

The man reaches the other end in time t = $$20\text{ s}$$

D

Displacement of trolley over the ground when the man reaches the other end of trolley is + 4.0 m

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NSEJS 2025 23rd Nov - Question 58

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In an experiment performed using a cloud chamber (a device that can show the tracks of subatomic

particle) the nature of a particle can be analysed. Under the influence of a strong perpendicular magnetic

field B directed into the plane of paper, a particle track like the one shown beside as p q was obtained.

The track shown may depict

A

a proton of (charge +e) moving from p to q

B

an alpha particle of (charge +2e) moving from p to q

C

an electron of (charge -e) moving from q to p

D

a neutron of (charge zero) moving from p to q

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NSEJS 2025 23rd Nov - Question 59

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A homogeneous column of water with refractive index a$$\mu_w=4/3$$ and height 8.0 $$\mathrm{cm}$$ fills the space above a 9.0 $$\mathrm{cm}$$ thick glass slab with refractive index a$$\mu_g=3/2$$. Observers A and B are in air just outside the top and the bottom whereas the observers C and D are inside just below the top and above the bottom. The total thickness of glass plus water
observed by these observers are

A

Observer A measures 12.0 $$\mathrm{cm}$$

B

Observer B measures 12.0 $$\mathrm{cm}$$

C

Observer C measures 16.0 $$\mathrm{cm}$$

D

Observer D measures 18.0 $$\mathrm{cm}$$

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NSEJS 2025 23rd Nov - Question 60

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Several resistances of 2 $$\Omega$$ and 3 $$\Omega$$ form the electric network shown in the figure. A dc supply of emf 18 Volt  and negligible internal resistance has been connected between points A and B.

A

Total resistance between A and B is 6 $$\Omega$$

B

Power consumed in the network is 60 W

C

Current through the 2 $$\Omega$$ resistance on branch AC is 3 A

D

Current through the 3 $$\Omega$$ resistance in branch CK is 2 A

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