P Block Elements Class 12 Assertion and Reason Questions
P Block Elements Class 12 Assertion and Reason Questions has been provided by JEE Wallah to help students score good marks in their CBSE and Competitive exams. Assertion and Reason Questions on P Block Elements Class 12 Chemistry is very important as these questions are asked in the Board Exam as well as JEE & NEET. Class 12 Chemistry P Block Elements Assertion and Reason Questions will help you check whether you have grasped the conceptual learning or not.
P Block Elements Class 12 Assertion and Reason Questions
Are you looking for a PDF file of Class 12 P Block Elements Assertion and Reasoning questions so that you can focus on your study to better perform in the upcoming CBSE Class 12 Board examination? If so, you are at the right place, our subject experts have prepared a set of P Block Elements Class 12 Assertion and Reason Questions in a PDF format which will boost up your preparation level.
Despite the fact that P Block Elements assertion and reasoning questions can be solved only by having proper conceptual knowledge, we are giving you some tips that can help you solve Assertion and Reasoning questions in Class 12 D and P Block Elements. The tips are : Read the Question Carefully; Analyze the Assertion statement; Analyze the Reason statement; Check if the Reason Statement of the P Block Elements Question Explains the Assertion Statement.
At last, our last tip is : Practice P Block Elements Class 12 Assertion and Reason Questions as much as possible.
1.
(A) - The covalency of Nitrogen in N2O5 is 5.
(R) - Nitrogen can expand its covalency beyond 4.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(d) Both A and R are False.
2.
(A) - Catenation tendency is weaker in nitrogen.
(R) - Nitrogen exists as diatomic gas.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
3.
(A) - Ammonia acts as a ligand.
(R) - A lone pair of electrons on nitrogen can be donated to acceptor.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(a) Both A and R are true and R is the correct explanation of A.
4.
(A) - White phosphorus is more reactive than red phosphorus.
(R) - It readily catches fire in air to give dense white fumes of P4O10
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
5.
(A) - In trigonal bipyramidal structure two axial bonds are longer than the equatorial bonds.
(R) - Axial bonds suffer more repulsion as compared to equatorial bonds.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(a) Both A and R are true and R is the correct explanation of A.
6.
(A) - Acidic character of group 16 hydrides increases from H2O to H2Te.
(R) - Thermal stablility of hydrides decreases down the group.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
7.
(A) - Ozone layer in the upper region of atmosphere protects earth from UV radiations of sun.
(R) - Ozone is a powerful oxidising agent as compared to oxygen.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
8.
(A) - O3 acts as a powerful oxidising agent.
(R) - O3 oxidises lead sulphide to lead sulphate and iodide ions to iodine.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
Also Read : Coordination Compounds Assertion and Reason
9.
(A) - In vapour state sulphur is paramagnetic in nature.
(R) - In vapour state sulphur exists as S2 molecule.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(a) Both A and R are true and R is the correct explanation of A.
10.
(A) - Sulphuric acid reacts with chloride in the following way: 2NaCl + H₂SO4→ 2HCl + Na₂SO4
(R) - Sulphuric acid because of its low volability can be used to manufacture more volatile acids from their corresponding salts.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(a) Both A and R are true and R is the correct explanation of A.
11.
(A) - Fluorine combines with sulphur to for SF6 but no other halogen forms hexahalide with sulphur.
(R) - The reactivity of halogens increases as the atomic number increases.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(c) A is true but R is false.
12.
(A) - Fluorine oxidises water to oxygen whereas chlorine and bromine react with water to form corresponding hydrohalic and hypohalous acids.
(R) - The reactivity of halogens increases down the group.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(c) A is true but R is false.
13.
(A) - Interhalogen compounds are more reactive than halogens (except fluorine).
(R) - They all undergo hydrolysis giving had ion derived from the smaller halogen and an derived from larger halogen.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(b) Both A and R are true and R is not the correct explanation of A.
14.
(A) - Solubility of noble gases in water decreases with increasing size of the noble gas.
(R) - Solubility of noble gases in water is due to dipole-dipole interaction.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true and R is not the correct explanation of A.
(c) A is true but R is false.
(d) Both A and R are False.
Answer
(d) Both A and R are False.
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