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NTA JEE Mains 27th Jan 2024 Shift 1 - Chemistry

For the following questions answer them individually

Given below are two statements : Statement (I) : Aqueous solution of ammonium carbonate is basic. 

Statement (II) : Acidic/basic nature of salt solution of a salt of weak acid and weak base depends on $$K_a$$ and $$K_b$$ value of acid and the base forming it. 

In the light of the above statements, choose the most appropriate answer from the options given below :

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Melting point of Boron (2453 K) is unusually high in group 13 elements. 

Reason (R) : Solid Boron has very strong crystalline lattice.

In the light of the above statements, choose the most appropriate answer from the options given below:

A solution of two miscible liquids showing negative deviation from Raoult's law will have :

NaCl reacts with conc. $$H_2SO_4$$ and $$K_2Cr_2O_7$$ to give reddish fumes (B), which react with NaOH to give yellow solution (C). (B) and (C) respectively are :

Given below are two statements : 

Statement (I) : The 4f and 5f-series of elements are placed separately in the Periodic table to preserve the principle of classification. Statement (II) : s-block elements can be found in pure form in nature. 

In light of the above statements, choose the most appropriate answer from the options given below:

Yellow compound of lead chromate gets dissolved on treatment with hot NaOH solution. The product of lead formed is a :

The correct statement regarding nucleophilic substitution reaction in a chiral alkyl halide is :

Given below are two statements :

Statement (I) : p-nitrophenol is more acidic than m-nitrophenol and o-nitrophenol. 

Statement (II) : Ethanol will give immediate turbidity with Lucas reagent. 

In the light of the above statements, choose the correct answer from the options given below :

Consider the following data for the given reaction $$2HI_{(g)} \rightarrow H_{2(g)} + I_{2(g)}$$. $$[HI] \text{ (mol L}^{-1}\text{)}$$: $$0.005, \; 0.01, \; 0.02$$. Rate $$\text{(mol L}^{-1} \text{ s}^{-1}\text{)}$$: $$7.5 \times 10^{-4}, \; 3.0 \times 10^{-3}, \; 1.2 \times 10^{-2}$$. The order of the reaction is _______.

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