Chemistry (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 18 - 22 of 63

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Question number: 18

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

The decreasing order of temperature of different zones of a candle is

Choices

Choice (4) Response

a.

outermost zone, middle zone, innermost zone

b.

middle zone, innermost zone, outermost zone

c.

outermost zone, innermost zone, middle zone

d.

innermost zone, middle zone, outermost zone

Question number: 19

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Consider the following changes

I. Burning of candle wax.

II. Crystallization of blue vitriol.

III. Passing of Equation gas through lime water.

Which of above is/are considered as chemical change?

Choices

Choice (4) Response

a.

I and II

b.

II and III

c.

I and III

d.

None of the above

Question number: 20

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Two copper plates in a glass vessel

Two Copper Plates in a Glass Vessel

Two copper plates placed in a glass vessel with H2SO4

If two copper plates are moved further apart from each other, then

Choices

Choice (4) Response

a.

less copper deposited

b.

same copper deposited

c.

more copper deposited

d.

two times copper deposited

Question number: 21

» Chemistry » Structure of Atom

MCQ▾

Question

Which one among the following is the main ingredient in cement?

Choices

Choice (4) Response

a.

Limestone

b.

Gypsum

c.

Clay

d.

Ash

Question number: 22

» Chemistry » Carbon and Its Compounds

Match List-Ⅰ List-Ⅱ▾

Question

Match the following
List-Ⅰ (Feel Gases) List-Ⅱ (Major Constituents)

(A)

Coal gas

(i)

Carbon monoxide, hydrogen

(B)

CNG

(ii)

Butane, propane

(C)

LPG

(iii)

Butane, ethane

(D)

Water gas

(iv)

Hydrogen, methane, CO

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (iv)
  • (iii)
  • (ii)
  • (i)

b.

  • (iv)
  • (i)
  • (iii)
  • (ii)

c.

  • (iii)
  • (ii)
  • (i)
  • (iv)

d.

  • (iv)
  • (i)
  • (ii)
  • (iii)

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