Nitrogen

Q.

Why is nitrogen needed by plants and animals?

Q.

How do you identify single, double and triple bonds?

Q. Which type of bond is present between nitrogen atoms in a nitrogen molecule?

1. Single Bond
2. Double Bond
3. Triple Bond
   
4. Ionic Bond
   

Q.

Why nitrogen is an essential element for plants?

Q. bond is present between the two nitrogen atoms in a nitrogen molecule.

1. Double
2. Triple
3. Single

Q.

Name two nitrates which on heating produce only oxygen gas.

Q.

Which is the correct formula for nitrogen (1) oxide?

1. N₂O

2. NO₂

3. N₂O₃

4. NO

Q.

All living plants and animals need _______ for their growth as it is an important constituent of proteins.

Q. In a $H_2$ molecule, one pair of electrons is shared between the two hydrogen atoms.

1. False
2. True

Q.

Halogen which is a violet solid _________.

Q. Select the important effects of air pollution among the following options.

1. Change in weather and climatic conditions
2. Ozone depletion
3. Decrease in fertility of soil
4. Global warming

Q. Which scientist identified the existence of nitrogen gas?

1. Joseph Priestley
   
2. Lavoisier
   
3. Daniel Rutherford
   
4. Jean-Antoine Chaptal
   

Q. The burning of a candle involves both physical and chemical changes.

1. True
2. False

Q.

Which of the following is the most abundant gas present in air?

1. Chlorofluorocarbons are responsible for ozone layer depletion
2. Greenhouse effect is responsible for global warming
3. Ozone layer does not permit infrared radiation from the sun to reach the earth
4. Acid rains is mostly because of oxides of nitrogen and sulphur

Q. Bond formed in a hydrogen molecule is non-polar covalent bond.

1. True
2. False

Q.

3. The two oxides of carbon are …………………. and …………………….

Q. Nitrogen belongs to group ____ of the periodic table.

1. 15
2. 16
3. 14
4. 17

Q.

Oily and fatty food items are flushed with nitrogen gas because of which one of the following reasons?

1. Nitrogen reacts with oils and fats and thus prevents oxidation.

2. Nitrogen is inert and prevents a direct contact of air with oily and fatty food items.

3. Nitrogen helps in the decomposition of food items and makes them tasty

4. The given statement is wrong.

Q. Hydrogen exhibits the properties similar to both alkali metals and halogens.

1. True
2. False

Q.

The reactive effects of oxygen gas can be nullified by the help of:

1. Boron

2. Nitrogen

3. Hydrogen

4. Helium

Q. Detection of drugs in the blood can be done by using chromatography.

1. True
2. False

Q.

What is the role of nitrogen in the food industry?

Q. Which of the following is not the property of hydrogen gas?

1. Monoatomic
2. Inflammable
3. Colourless
4. Odourless

Q.

State two most important uses of following non -metal Nitrogen

Q.

Find the value of X in the following equation:

$4N{O}_2+2H_{2}O+O_2\to$ $XHN{O}_3$

1. 4

Q.
Which property of nitrogen is responsible for its extensive use in the food packaging industry?

1. Colourless
2. Odourless
3. Inert
4. Tasteless

Q.

Do fishes release nitrites?

Q.

48. Write the molecular equation for the following word equation.

$\mathrm{Sulphur}+\mathrm{Oxygen}\to \mathrm{Sulphur}\mathrm{Dioxide}$

Q.

Which of the following will yield $N_2$ when heated?

1. $Na{N}_3$

2. $N{H}_{4}N{O}_2$

3. $N{H}_{4}N{O}_3$

4. $(N{H}_4{)}_{2}C{r}_2{O}_7$

Q. Number of electrons shared in the formation of nitrogen molecule is:

1. 6
2. 10
3. 2
4. 8