In the laboratory preparation of chlorine, manganese dioxide
(a) Functions as a catalyst
(b) Gets oxidized
(c) Gets reduced
(d) None of these
Answer: c
The process of bleaching by chlorine is called
(a) Decomposition
(b) Oxidation
(c) Reduction
(d) Substitution
Answer: b
Which of the following non- metals is a liquid ?
(a) Bromine
(b) Carbon
(c) Phosphorus
(d) Sulphur
Answer: a
Which of the following statements about the physical properties of metals is not correct ?
(a) All metals are solid except mercury
(b) Most of the metals are hard except sodium and potassium
(c) They are not malleable
(d) Hydrogen and chlorine
Answer: c
Which of the following are produced by the electrolysis of brine ?
(a) Chlorine and sodium
(b) Chlorine and sodium hydroxide
(c) Chlorine, hydrogen and sodium hydroxide
(d) Hydrogen and chlorine
Answer: d
Which of the following acids is used as a dehydrating and drying agent ?
(a) Acetic
(b) Hydrochloric
(c) Nitric
(d) Sulphuric
Answer: d
Which of the following reactions cannot be used for the formation of salts ?
(a) The reaction between a metal oxide and an acid
(b) The reaction between an acid and a base
(c) The reaction between a non-metal and oxygen
(d) The reaction between an acid anhydride and a metal
Answer: c
The combustible material on the tip of a safety match stick is
(a) Antimony sulphide
(b) Phosphorus
(c) Manganese dioxide
(d) Sulphur
Answer: a
All of the following are units of electrical measurements, except
(a) Angstrom
(b) Coulomb
(c) Ohm
(d) Siemen
Answer: a
The term ‘carat’ is used to express purity of gold. The purest form of gold is
(a) 18 carats
(b) 20 carats
(c) 22 carats
(d) 24 carats
Answer: d
(b) Gets oxidized
(c) Gets reduced
(d) None of these
Answer: c
The process of bleaching by chlorine is called
(a) Decomposition
(b) Oxidation
(c) Reduction
(d) Substitution
Answer: b
Which of the following non- metals is a liquid ?
(a) Bromine
(b) Carbon
(c) Phosphorus
(d) Sulphur
Answer: a
Which of the following statements about the physical properties of metals is not correct ?
(a) All metals are solid except mercury
(b) Most of the metals are hard except sodium and potassium
(c) They are not malleable
(d) Hydrogen and chlorine
Answer: c
Which of the following are produced by the electrolysis of brine ?
(a) Chlorine and sodium
(b) Chlorine and sodium hydroxide
(c) Chlorine, hydrogen and sodium hydroxide
(d) Hydrogen and chlorine
Answer: d
Which of the following acids is used as a dehydrating and drying agent ?
(a) Acetic
(b) Hydrochloric
(c) Nitric
(d) Sulphuric
Answer: d
Which of the following reactions cannot be used for the formation of salts ?
(a) The reaction between a metal oxide and an acid
(b) The reaction between an acid and a base
(c) The reaction between a non-metal and oxygen
(d) The reaction between an acid anhydride and a metal
Answer: c
The combustible material on the tip of a safety match stick is
(a) Antimony sulphide
(b) Phosphorus
(c) Manganese dioxide
(d) Sulphur
Answer: a
All of the following are units of electrical measurements, except
(a) Angstrom
(b) Coulomb
(c) Ohm
(d) Siemen
Answer: a
The term ‘carat’ is used to express purity of gold. The purest form of gold is
(a) 18 carats
(b) 20 carats
(c) 22 carats
(d) 24 carats
Answer: d