Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 80 - 87 of 144

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Question number: 80

» 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: 81

» 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: 82

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

In the presence of concentrated sulphuric acid Equation , acetic acid reacts with ethyl alcohol to produce

Choices

Choice (4) Response

a.

Aldehyde

b.

Ester

c.

alcohol

d.

carboxylic acid

Question number: 83

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Arrange the following elements in order of their increasing ionization energies O, S, Se, Te, Po

Choices

Choice (4) Response

a.

O, S, Se, Te, Po

b.

Po, Te, Se, S, O

c.

Se, Te, S, Po, O

d.

Te, O, S, Po, Se

Question number: 84

» Chemistry » Metals & Non Metals

MCQ▾

Question

Which one of the following is a non-metallic mineral?

Choices

Choice (4) Response

a.

Lead

b.

Copper

c.

Tin

d.

Limestone

Question number: 85

» Chemistry » Structure of Atom

MCQ▾

Question

How many moles are in 5 g of calcium?

Choices

Choice (4) Response

a.

0.5 mole

b.

0.375 mole

c.

0.25 mole

d.

0.125 mole

Question number: 86

» Chemistry » Structure of Atom

MCQ▾

Question

Which of the following represents 1?

Choices

Choice (4) Response

a.

Mass of C-12 atoms

b.

Equation of mass of C-12 atoms

c.

Mass of 0 - 16 atoms

d.

Mass of H-atom

Question number: 87

» Chemistry » Structure of Atom

MCQ▾

Question

The chloride of a metal has the formula Equation . The formula of its phosphate will be

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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