Class 9 | Substances in Common Use

What is the chemical formula of baking soda?

1/30

The molecular formula for baking soda is .................... .

2/30

Substance used to make hard water soft is .................... .

3/30

Soap is .................... in nature.

4/30

Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl.

5/30

Molecular formula for magnesium bromide is .................... .

6/30

Select the odd one out: Boron-10, Iodine – 131, Cobalt – 60, Iodine – 123.

7/30

The molten state of NaCl is also called as .................... .

8/30

Bleaching powder is also called .................... .

9/30

Salt obtained from certain type of rock is called .................... .

10/30

Strong odour in swimming pool is due to .................... .

11/30

Chlorine gas is a strong .................... agent.

12/30

The .................... % aqueous solution of salt is called brine.

13/30

Rock salt is .................... in colour.

14/30

.................... is known as chloride of lime.

15/30

During electrolysis of NaCl in the fused state .................... is formed at cathode.

16/30

What is the primary component of natural gas?

17/30

Melting point of NaCl is .................... .

18/30

The fixed number of molecules of water in alum is .................... .

19/30

Select the odd one out: Sodium sulphate, Barium chloride, Magnesium sulphate, Bleaching powder.

20/30

What is the chemical name of common salt?

21/30

Select the odd one out: Na2CO3.10H2O, Na2SO4.10H2O, BaCl2.2H2O, CaOCl2

22/30

Select the odd one out: Soap, Toothpaste, Baking soda, Curd.

23/30

Which of the following is a non-metallic element essential for human bone formation?

24/30

Baking soda is

25/30

Bleaching powder is .................... in colour.

26/30

Which gas is released during the process of photosynthesis?

27/30

Which substance is commonly used as a disinfectant in swimming pools?

28/30

NaHCO3 is also called as .................... .

29/30

Select the odd one out: Strontium – 89, Strontium – 90, Radium – 223, Iodine – 123.

30/30
Substances In Common Use

Class 9 | Substances in Common Use

1 / 30

Which of the following is a non-metallic element essential for human bone formation?

2 / 30

Select the odd one out: Strontium – 89, Strontium – 90, Radium – 223, Iodine – 123.

3 / 30

The molecular formula for baking soda is ……………….. .

4 / 30

Melting point of NaCl is ……………….. .

5 / 30

Which gas is released during the process of photosynthesis?

6 / 30

Strong odour in swimming pool is due to ……………….. .

7 / 30

Select the odd one out: Sodium sulphate, Barium chloride, Magnesium sulphate, Bleaching powder.

8 / 30

Select the odd one out: Boron-10, Iodine – 131, Cobalt – 60, Iodine – 123.

9 / 30

Substance used to make hard water soft is ……………….. .

10 / 30

During electrolysis of NaCl in the fused state ……………….. is formed at cathode.

11 / 30

The molten state of NaCl is also called as ……………….. .

12 / 30

……………….. is known as chloride of lime.

13 / 30

Select the odd one out: Na2SO4, K3PO4, MgBr2, HCl.

14 / 30

Which substance is commonly used as a disinfectant in swimming pools?

15 / 30

Bleaching powder is ……………….. in colour.

16 / 30

NaHCO3 is also called as ……………….. .

17 / 30

The fixed number of molecules of water in alum is ……………….. .

18 / 30

Select the odd one out: Soap, Toothpaste, Baking soda, Curd.

19 / 30

What is the chemical name of common salt?

20 / 30

Rock salt is ……………….. in colour.

21 / 30

What is the primary component of natural gas?

22 / 30

Salt obtained from certain type of rock is called ……………….. .

23 / 30

Soap is ……………….. in nature.

24 / 30

Bleaching powder is also called ……………….. .

25 / 30

The ……………….. % aqueous solution of salt is called brine.

26 / 30

Baking soda is

27 / 30

What is the chemical formula of baking soda?

28 / 30

Molecular formula for magnesium bromide is ……………….. .

29 / 30

Chlorine gas is a strong ……………….. agent.

30 / 30

Select the odd one out: Na2CO3.10H2O, Na2SO4.10H2O, BaCl2.2H2O, CaOCl2

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The average score is 72%

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