Nust University islamabad

Nust University islamabad (MCQS ,, CSS , NTS , PSC , PCS )Preparation..!

22/06/2024

Which of the following is a balanced chemical equation for the reaction between calcium and water?

a) Ca+H2O→Ca(OH)2+H2

b) Ca+H2O→CaO+H2

c) Ca(OH)2+H2O→Ca+2H2O

d) CaO+H2O→Ca(OH)2

22/06/2024

Which of the following is an example of a chemical change?

a) Freezing of water

b) Digestion of food

c) Cutting of hair

d) Burning of coal

22/06/2024

What is the product obtained when zinc carbonate is heated?

a) Zinc oxide

b) Zinc nitrate

c) Zinc sulphate

d) Zinc chloride

22/06/2024

What is the chemical formula of sulphuric acid?

a) H2SO4

b) HCl

c) HNO3

d) H3PO4

22/06/2024

Which of the following is a balanced chemical equation for the reaction between iron and oxygen?

a) Fe+O→FeO

b) Fe+O2→FeO

c) FeO→Fe+O2

d) FeO→Fe+O

22/06/2024

What is the product obtained when copper sulphate is heated?

a) Copper oxide

b) Copper nitrate

c) Copper sulphide

d) Copper chloride

22/06/2024

What is the chemical formula of hydrochloric acid?

a) HCl

b) H2SO4

c) HNO3

d) H3PO4

22/06/2024

Which of the following is a balanced chemical equation for the reaction between zinc and sulphuric acid?

a) Zn+H2SO4→ZnSO4+H2O

b) Zn+H2SO4→ZnSO4+H2

c) ZnSO4+H2O→Zn+H2SO4

d) ZnSO4+H2→Zn+H2SO4

22/06/2024

What is the chemical formula of sodium hydroxide?

a) NaOH

b) Na2CO3

c) NaCl

d) NaNO3

22/06/2024

Which of the following is an example of a chemical change?

a) Boiling of water

b) Burning of candle

c) Cutting of paper

d) Melting of ice

22/06/2024

What is the product obtained when lead nitrate is heated?

a) Lead oxide

b) Lead nitride

c) Lead sulphate

d) Lead chloride

22/06/2024

Which of the following is a balanced chemical equation for the reaction between magnesium and oxygen?

a) Mg+O→MgO

b) Mg+O2→MgO

c) MgO→Mg+O2

d) MgO→Mg+O

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