Science Content-Basic Chemistry (CTET Paper-II Science): Questions 16 - 19 of 31

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Question number: 16

» Science Content » Basic Chemistry

Appeared in Year: 2011

MCQ▾

Question

Non-metallic oxides (June)

Choices

Choice (4) Response
a.

Are basic in nature

b.

Are amphoteric in nature

c.

Turn red litmus paper blue

d.

Are acidic in nature

Question number: 17

» Science Content » Basic Chemistry

Appeared in Year: 2012

MCQ▾

Question

The gas which forms carboxy-haemoglobin in the blood, causing suffocation is (Jan)

Choices

Choice (4) Response
a.

Chlorofluorocarbon

b.

Carbon monoxide

c.

Nitrogen

d.

Carbon dioxide

Question number: 18

» Science Content » Basic Chemistry

Appeared in Year: 2011

MCQ▾

Question

A man goes door to door posing as a goldsmith. He promises to bring back the glitter on dull gold ornaments. An unsuspecting woman gives a set of gold bangles to him which he dips in a particular solution. The bangles sparkle but their weight has considerably reduced. The solution used by the impostor probably is (June)

Choices

Choice (4) Response
a.

Conc. HCl

b.

A mixture of conc. HCl and conc. HNO3

c.

Dil. HCl

d.

Conc. HNO3

Question number: 19

» Science Content » Basic Chemistry

Appeared in Year: 2013

MCQ▾

Question

When we add aluminum foil to freshly prepared sodium hydroxide solution a gas is produced. Which of the following correctly states the property of this gas? (July)

Choices

Choice (4) Response
a.

Colorless and odorless gas which extinguishes a burning match stick.

b.

Brown colored pungent smelling gas.

c.

Colorless and odorless gas which produces a ‘pop’ sound when a burning match stick is brought near it.

d.

Colorless and odorless gas which promotes burning of a candle.

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