[Download PDF] NTA JEE Main 3rd September 2020 Shift 1

For the following questions answer them individually

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 26

The atomic number of the element unnilennium is:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 27

If the boiling point of $$H_2O$$ is 373 K, and the boiling point of $$H_2S$$ will be:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 28

Of the species, NO, NO$$^+$$, NO$$^{2+}$$ and NO$$^-$$, the one with minimum bond strength is:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 29

An acidic buffer is obtained on mixing:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 30

Which one of the following compounds possesses the most acidic hydrogen?

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 31

Glycerol is separated in soap industries by:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 32

The Kjeldahl method of Nitrogen estimation fails for which of the following reaction products?

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 33

Which of the following compounds produces an optically inactive compound on hydrogenation?

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 34

Thermal power plants can lead to:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 35

Henry's constant (in kbar) for four gases $$\alpha$$, $$\beta$$, $$\gamma$$ and $$\delta$$ in water at 298 K is given below:

(density of water = 10$$^3$$ kg m$$^{-3}$$ at 298 K) This table implies that:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 36

Let $$C_{NaCl}$$ and $$C_{BaSO_4}$$, be the conductances (in S) measured for saturated aqueous solutions of NaCl and $$BaSO_4$$ respectively, at a temperature T. Which of the following is false?

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 37

It is true that:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 38

Tyndall effect is observed when:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 39

Aqua regia is used for dissolving noble metals (Au, Pt, etc.). The gas evolved in this process is

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 40

In a molecule of pyrophosphoric acid, the number of P - O - H, P = O and P - O - P bonds/moiety(ies) respectively are:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 41

The electronic spectrum of $$\left[Ti(H_2O)_6\right]^{3+}$$ shows a single broad peak with a maximum at 20,300 cm$$^{-1}$$. The crystal field stabilization energy (CFSE) of the complex ion, in kJ mol$$^{-1}$$, is: (1 kJ mol$$^{-1}$$ = 83.7 cm$$^{-1}$$)

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 42

The complex that can show optical activity is:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 43

The mechanism of Sn1 reaction is given as:
$$R - X \rightarrow R^\oplus X^\ominus \rightarrow R^\oplus \| X^\ominus \xrightarrow{Y^\ominus} R - Y + X^\ominus$$
Ion pair Solvent separated ion pair
A student writes general characteristics based on the given mechanism as:
(a) The reaction is favoured by weak nucleophiles.
(b) $$R^\oplus$$ would be easily formed if the substituents are bulky
(c) The reaction is accompanied by racemization
(d) The reaction is favoured by non-polar solvents.
Which observations are correct?

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 44

An organic compound [A], molecular formula $$C_{10}H_{20}O_2$$ was hydrolyzed with dilute sulphuric acid to give a carboxylic acid [B] and an alcohol [C]. Oxidation of [C] with $$CrO_3 - H_2SO_4$$ produced [B]. Which of the following structures are not possible for [A]?

R) $$CH_3CH_2CH_2COOCH_2CH_2CH_2CH_3$$

S) $$(CH_3)_3 - C - COOCH_2C(CH_3)_3$$

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 45

The antifertility drug "Novestrol" can react with:

NTA JEE Main 3rd September 2020 Shift 1 - Chemistry - Question 46

The mole fraction of glucose ($$C_6H_{12}O_6$$) in an aqueous binary solution is 0.1. The mass percentage of water in it, to the nearest integer, is .........