Stoichiometry

MCQ's Test For Chapter 4 "Stoichiometry"

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Stoichiometry

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Question # 1

How many atoms are present in one mole of water.

Question # 2

Which of the following contains same number of particles as present in 12 g of carbon

Question # 3

What the mass of oxygen obtaingng from 72 g of pure water.

Question # 4

The mass of 0.5 mole of Al is

Question # 5

The largest numebr of molecules are present in

Question # 6

A solution contains 4.0 g of sodium hydroxide  in 250 cm3 of solution. What is the molar concentration of this solution 

Question # 7

32 g of oxygen gas contains.

Question # 8

What are teh numebr f moles of hydrogen atom in 3.2 g of CH4? 

Question # 9

The mass  of 1.55 x 10 23 atoms of Si

Question # 10

Which of the following has minimum mass

Question # 11

The mass of one mole chlorine gas is.

Question # 12

One mole of SO2 conatains.

Question # 13

Which one of the followng gases will have maximum volume at STP.

Question # 14

The volume of occupied by 1.4 g of N1 at

Question # 15

Which one of the followng has maximum mass.

Question # 16

How many moles of water are proeuced by buringing 4 moles of H2 with excess of oxygen.

Question # 17

The total number of oxygen atom is 22 g of CO2 gas is

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FSc Part 1 Chemistry (New Book) Chapter 4 Important MCQ's

Sr.# Question Answer
1

The mass of molecules of CO 
A.

0.5 moles

B.

2.0 moles

C.

1.0 moles

D.

1.06 moles
2

A container holds 0,5 moles of an ideal gas at STP, What is the volume of the gas in dm3
A.

11.2 dm3

B.

22.4 dm3

C.

44.8 dm3

D.

12.2 dm3
3

The number of molecule  in 8g of oxygen gas is.
A.

6.02 x 10 23  

B.

1.50 x 10 23  

C.

0.75 x 10 23  

D.

12.4 x 10 23  
4

A gas has a density of 1.43 g  dm3 at STP. What is the molar mass of the gas?
A.

14.3 g mol-1

B.

32.0 g mol-1

C.

22.4 g mol-1

D.

64.0 g mol-1
5

One moleof crbon -12 has mass
A.

0.012 kg

B.

1 kg

C.

0.0224 kg

D.

12 kg
6

The ratio of numerbof olecues of 2 g H2 gas to numebr of molecues of 64 g gaseous oxygen is
A.

1:2

B.

1:1

C.

1:32

D.

1:4
7

What the mass of oxygen obtaingng from 72 g of pure water.
A.

16 g

B.

32 g

C.

64 g

D.

72 g
8

The numebr of molesof CO2 which contain 8 g of oxygen
A.

0.25

B.

0.5

C.

1.0

D.

1.50
9

The number of moles of CH4 in  4 g of gas is
A.

0.2 moles

B.

0.25 mole

C.

0.3 mol

D.

0.4 mole
10

A ring has 6 g of diamond in it. What is the number of atoms in it.
A.

3.01 x 10 23

B.

6.02 x 10 23

C.

6.02.01 x 10 9

D.

12.01 x 10 23

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