Oxides of Nitrogen

Q. The total number of lone pairs of electrons in $N_2{O}_3$ is. ___

Q. Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other?

1. Is soluble in water.
2. Is used as a food preservative.
3. Forms 'acid - rain'.
4. Is a reducing agent.

Q. Lone pair electrons are the __________ electrons which do not participate in bonding.

1. unpaired
2. valence shell
3. inner shell
4. penultimate shell

Q.

What happens when a strip of zinc is immersed in a solution of copper sulphate solution.

Q. This section contains 1 Assertion-Reason type question, which has 4 choices (a), (b), (c) and (d) out of which ONLY ONE is correct.
इस खण्ड में 1 कथन-कारण प्रकार का प्रश्न है, जिसमें 4 विकल्प (a), (b), (c) तथा (d) दिये गये हैं, जिनमें से केवल एक सही है।

A : When 4 Faraday of electricity is passed through 1 L, 0.1 molar H₂SO₄(aq) solution, then 22.4 litre O₂ is evolved at 1 atm and 0°C.
A : जब 1 L, 0.1 मोलर H₂SO₄(aq) विलयन में 4 फैराडे विद्युत प्रवाहित की जाती है, तो 1 atm व 0°C पर 22.4 लीटर O₂ मुक्त होती है।

R : H₂ gas is produced at cathode and O₂ gas is evolved at anode.
R : H₂ गैस कैथोड पर प्राप्त होती है तथा O₂ गैस एनोड पर मुक्त होती है।

1. Both (A) and (R) are true and (R) is the correct explanation of (A)
   
   (A) तथा (R) दोनों सही हैं लेकिन (R), (A) का सही स्पष्टीकरण है
2. Both (A) and (R) are true but (R) is not the correct explanation of (A)
   
   (A) तथा (R) दोनों सही हैं लेकिन (R), (A) का सही स्पष्टीकरण नहीं है
3. (A) is true but (R) is false
   
   (A) सही है लेकिन (R) गलत है
4. (A) is false but (R) is true
   
   (A) गलत है लेकिन (R) सही है

Q.

Statement I: Nitrogen and Oxygen are the main components in the atmosphere but these do not react to form oxides of nitrogen.
Statement: II: The reaction between nitrogen and oxygen requires high temperature.

1. Both assertion and reason are correct, and the reason is the correct explanation for the assertion.

2. Both assertion and reason are correct, but the reason is not the correct explanation for the assertion.

3. The assertion is incorrect, but the reason is correct.

4. Both are assertion and reason are incorrect.

Q. Give reason for the following:​
Zinc granules are used in laboratories for the preparation of hydrogen.​

Q. Choose the correct order of repulsions between bond pairs and lone pairs of electrons.
LP: lone pair of electrons
BP: bond pair of electrons

1. LP - LP > BP - BP > LP - BP
2. BP - BP > LP - BP > LP - LP
3. LP - BP > LP - LP > BP - BP
4. LP - LP > LP - BP > BP - BP

Q. Burst the bubbles that contains a strong acid or a strong base.

1. $KOH$
2. $H_{2}S{O}_4$
3. $H_{2}C{O}_3$
4. $NaOH$
5. $N{H}_3$
6. $C{H}_{3}COOH$
7. $HN{O}_3$
8. $HCl$