NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension: Questions 594 - 598 of 1058

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Question number: 594

» Chemistry » Structure of Atom

MCQ▾

Question

Structures of nuclei of three atoms A, B and C are given below.

A has 90 protons and 146 neutrons B has 92 protons and 146 neutrons C has 90 protons and 148 neutrons

Based on the above data, which of these atoms are isotopes and which are isobars?

Choices

Choice (4) Response

a.

A and C are isotopes, A and B are isobars

b.

A and B are isotopes, A and C are isobars

c.

A and C are isotopes, B and C are isobars

d.

B and C are isobars, A and B are isotopes

Question number: 595

» Chemistry » Acid Bases and Salt

MCQ▾

Question

The normality of 0.3 M phosphoric acid is

Choices

Choice (4) Response

a.

0.1

b.

0.3

c.

0.9

d.

0.6

Question number: 596

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

A technician has 10 resistors each of resistance 0.1Ω. The largest and smallest resistances that he can obtain by combining these resistors are

Choices

Choice (4) Response

a.

1 Ω and 0.01 Ω respectively

b.

1 Ω. and 0.1 Ω respectively

c.

10 Ω and 1 Ω respectively

d.

0.1 Ω and 0.01 Ω. Respectively

Question number: 597

» Chemistry » Structure of Atom

MCQ▾

Question

Which of the following gases’ is known as tear gas?

Choices

Choice (4) Response

a.

Sulphur dioxide

b.

Chloropicrin

c.

Methyl isocyanides

d.

Nitrous oxide

Question number: 598

» Physics » Magnetism & Electricity at Work

MCQ▾

Question

Eight identical spherical mercury drops charged to a potential of 20 V each are coalesced into a single spherical drop

Choices

Choice (4) Response

a.

Internal energy of the system decreases

b.

The potential remains the same i. e. , 20 V

c.

The internal energy of the system remains the same

d.

The new potential of the drop is 80 V

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