Question

Q.4 Select the correct answer from the choice in bracket to complete each sentence.
[5]
1. Nitrogen of the air is utilized by plants for formation of (carbohydrates/proteins)
2. The gas evolved as a product of combustion as well as respiration is
(nitrogen dioxide/carbon dioxide).
3. A candle burns in a jar of oxygen, but gets extinguished in (chlorine/nitrogen)
4. Air has variable composition & hence there is
ſless/more] oxygen at
lower altitudes than at higher altitudes.
5. Rusting is a chemical reaction which involves (rapid / slow] oxidation.
follorin eyneriments.
[5]​

Answer 1

Answer:

1. proteins

2. carbon dioxide

3. nitrogen

4. more

5. slow

Answer 2

Answer:

1. Proteins

2. Carbon Dioxide

3. Nitrogen

4. Less

5. Rapid