[Download PDF] NTA JEE Main 10th January 2019 Shift 1

Instructions

For the following questions answer them individually

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 31

Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface?

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 32

The type of hybridization and no. of lone pair(s) of electron of Xe in $$XeOF_4$$, respectively, are:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 33

Two pi and half sigma bonds are present in:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 34

A process has $$\Delta H = 200$$ J mol$$^{-1}$$ and $$\Delta S = 40$$ J K$$^{-1}$$ mol$$^{-1}$$. Out of the values given below choose the minimum temperature above which the process will be spontaneous:

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 35

What are the values of $$\frac{K_p}{K_c}$$ for the following reactions at 300 K respectively?
(At 300 K, RT = 24.62 dm$$^2$$ atm mol$$^{-1}$$)
$$N_2(g) + O_2(g) \rightleftharpoons 2NO(g)$$
$$N_2O_4(g) \rightleftharpoons 2NO(g)$$
$$N_2(g) + 3H_2(g) \rightleftharpoons 2NH_3(g)$$

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 36

A mixture of 100 m mol of $$Ca(OH)_2$$ and 2 g of sodium sulphate was dissolved in water and the volume was made up to 100 mL. What is the mass of calcium sulphate formed and the concentration of $$OH^-$$ in resulting solution, respectively? (Molar mass of $$Ca(OH)_2$$, $$Na_2SO_4$$ and $$CaSO_4$$ are 74, 143 and 136 g mol$$^{-1}$$, respectively; $$K_{sp}$$ of $$Ca(OH)_2$$ is $$5.5 \times 10^{-6}$$)

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 37

The chemical nature of hydrogen peroxide is:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 38

The total number of isotopes of hydrogen and number of radioactive isotopes among them, respectively, are:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 39

The metal used for making X-ray tube window is:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 40

The electronegativity of aluminum is similar to:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 41

The increasing order of the pKa values of the following compounds is:

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 42

If Dichloromethane (DCM) and water $$H_2O$$ are used for differential extraction, which one of the following statements is correct?

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 43

The major product of the following reaction is:

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 44

Which hydrogen in compound (E) is easily replaceable during bromination reaction in presence of light?

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 45

Water filled in two glasses A and B gave BOD values of 10 and 20, respectively. The correct statement regarding them is:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 46

Which primitive unit cell has unequal edge lengths ($$a \neq b \neq c$$) and all axial angles different from 90$$^{\circ}$$?

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 47

Liquids A and B form an ideal solution in the entire composition range. At 350K, the vapour pressure of pure A and pure B are $$7 \times 10^3$$ Pa and $$12 \times 10^3$$ Pa, respectively. The composition of the vapour in equilibrium with a solution containing 40 mole percent of A at this temperature is:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 48

Consider the following reduction processes:
$$Zn^{2+} + 2e^- \rightarrow Zn(s); E^{\circ} = -0.76$$ V
$$Ca^{2+} + 2e^- \rightarrow Ca(s); E^{\circ} = -2.87$$ V
$$Mg^{2+} + 2e^- \rightarrow Mg(s); E^{\circ} = -2.36$$ V
$$Ni^{2+} + 2e^- \rightarrow Ni(s); E^{\circ} = -0.25$$ V
The reducing power of the metals increases in the order:

Solution

NTA JEE Main 10th January 2019 Shift 1 - Chemistry - Question 49

Consider the given plots for a reaction obeying Arrhenius equation ($$0^{\circ}$$C < T < 300$$^{\circ}$$C): (K and $$E_a$$ are rate constant and activation energy, respectively)