Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 92 - 98 of 142

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Question number: 92

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

Which of the following pairs includes isomeric compounds?

Choices

Choice (4) Response

a.

Aldehydes and carboxylic acids

b.

Alcohols and aldehydes

c.

Alcohols and ketones

d.

Ketones and aldehydes

Question number: 93

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

Consider the following statements

I. Sulphur is used in making electrodes of dry cells.

II. Carbon is used in the vulcanization of rubber.

Which of the above statements is/are correct?

Choices

Choice (4) Response

a.

Only I

b.

I and II

c.

Only II

d.

None of the above

Question number: 94

» Chemistry » Carbon and Its Compounds

Appeared in Year: 2013

MCQ▾

Question

The type of radiation absorbed by CO2 molecule in atmosphere are

Choices

Choice (4) Response

a.

X-rays

b.

UV-rays

c.

Infra-red rays

d.

Gamma rays

Question number: 95

» Chemistry » Structure of Atom

MCQ▾

Question

Which of the following will have equal number of electrons?

Choices

Choice (4) Response

a.

Cl and Br

b.

Ar and Ne

c.

Na + and Mg 2+

d.

Mg 2+ and Ca 2+

Question number: 96

» Chemistry » Structure of Atom

MCQ▾

Question

Mg has three natural isotopes whose isotopic masses and relative abundances are respectively 23.98 (78.60%), 24.98 (10.11%) and 25.98 (11.29%). The atomic mass of Mg will be

Choices

Choice (4) Response

a.

24.31

b.

23.95

c.

23.42

d.

24.95

Question number: 97

» Chemistry » Structure of Atom

MCQ▾

Question

The electronic configuration of an ion M 2+ is 2, 8 and 14. If its mass is 56, the number of neutrons in its nucleus is

Choices

Choice (4) Response

a.

34

b.

30

c.

42

d.

32

Question number: 98

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

H2S(g)+Cl2(g)2HCl(g)+S(s)

The reaction is interpreted as

Choices

Choice (4) Response

a.

H2S is getting reduced and Cl2 is getting oxidized

b.

Only H2S is oxidized

c.

H2S and Cl2 are reduced

d.

H2S is getting oxidized and Cl2 is getting reduced

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