Chemistry-Physical and Chemical Changes (NTSE Stage-2 (National-Level) Scholastic-Aptitude & Language Comprehension): Questions 7 - 11 of 26

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Question number: 7

» Chemistry » Physical and Chemical Changes

Match List-Ⅰ List-Ⅱ▾

Question

Match the following
List-Ⅰ (Types Of Polymers) List-Ⅱ (Uses Of Polymers)

(A)

Cotton

(i)

Non-sticking cookware

(B)

Teflon

(ii)

Appears like silk

(C)

Nylon

(iii)

Easily biodegradable

(D)

Melamine

(iv)

Flame resistant

Choices

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

a.

  • (iv)
  • (ii)
  • (i)
  • (iii)

b.

  • (i)
  • (ii)
  • (iii)
  • (iv)

c.

  • (iv)
  • (iii)
  • (ii)
  • (i)

d.

  • (iii)
  • (ii)
  • (i)
  • (iv)

Question number: 8

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Consider the following changes

I. Hammering of red hot iron and make flat sheet.

II. Formation of ice by cooling water.

III. Vaporization of sea water.

The example (s) of physical change (s) is/are

Choices

Choice (4) Response

a.

I and II

b.

I, II and III

c.

I and III

d.

II and III

Question number: 9

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

What will be the effect of added ammonium nitrate to soil?

Choices

Choice (4) Response

a.

The soil become alkaline

b.

Soil first become alkaline then acidic

c.

Soil first become acidic then alkaline

d.

The soil become acidic

Question number: 10

» 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: 11

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Consider the following changes

I. Burning of candle wax.

II. Crystallization of blue vitriol.

III. Passing of CO2 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

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