Day 470: JEE Mains Chemistry
5 questions. Try each one first, then open its answer.
Question 1
Some Basic Concepts of Chemistry. Asked once: 25 Jul 2022
53The pressure of a moist gas at is . The volume of the container is doubled at the same temperature. The new pressure of the moist gas is . (Nearest integer) (Given: The vapour pressure of water at is )Question 2
Structure of Atom. Asked once: 15 Apr 2023
38Given below are two statements: Statement I: According to Bohr's model of hydrogen atom, the angular momentum of an electron in a given stationary state is quantised. Statement II: The concept of electron in Bohr's orbit, violates the Heisenberg uncertainty principle. In the light of the above statements, choose the most appropriate answer from the options given below:Tap an option to check your answer.
Question 3
The d- and f-Block Elements. Asked once: 25 Jan 2023
135A chloride salt solution acidified with dil. gives a curdy white precipitate, [A], on addition of . [A] on treatment with gives a clear solution, . A and B are respectivelyTap an option to check your answer.
Question 4
The p-Block Elements. Asked once: 31 Jan 2024
132Choose the correct statements from the following (A) All group 16 elements form oxides of general formula and where and Po. Both the types of oxides are acidic in nature. (B) is an oxidising agent while is reducing in nature. (C) The reducing property decreases from to down the group. (D) The ozone molecule contains five lone pairs of electrons. Choose the correct answer from the options given below:Tap an option to check your answer.
Question 5
Alcohols, Phenols and Ethers. Asked once: 31 Jan 2024
39Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R: Assertion A: Alcohols react both as nucleophiles and electrophiles. Reason R: Alcohols react with active metals such as sodium, potassium and aluminum to yield corresponding alkoxides and liberate hydrogen. In the light of the above statements, choose the correct answer from the options given below:Tap an option to check your answer.