Chemistry (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 6 - 10 of 142

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Question number: 6

» Chemistry » Carbon and Its Compounds

MCQ▾

Question

A compound ‘X’ is an alkane. It is the main constituent of natural gas and abundantly found in marshy areas. In presence of sunlight, it reacts with chlorine and forms chloroform, but in absence of sunlight, it does not reacts with chlorine. Identify ‘X’.

Choices

Choice (4) Response

a.

Methane

b.

Butane

c.

Ethane

d.

Propane

Question number: 7

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

2KClO32KCl+3O2

The above reaction is an example of a

Choices

Choice (4) Response

a.

displacement reaction

b.

double displacement reaction

c.

combination reaction

d.

decomposition reaction

Question number: 8

» Chemistry » Metals & Non Metals

Match List-Ⅰ List-Ⅱ▾

Question

Match the following:
List-Ⅰ (Element) List-Ⅱ (Discoverer)

(A)

Titanium

(i)

Carl Wihhelm Scheele

(B)

Barium

(ii)

Daniel Rutherford

(C)

Polonium

(iii)

William Gregor

(D)

Nitrogen

(iv)

Marie Curie, Pierre Curie

Choices

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

a.

  • (iii)
  • (i)
  • (iv)
  • (ii)

b.

  • (iv)
  • (ii)
  • (i)
  • (iii)

c.

  • (iii)
  • (iv)
  • (i)
  • (ii)

d.

  • (i)
  • (iii)
  • (ii)
  • (iv)

Question number: 9

» Chemistry » Physical and Chemical Changes

MCQ▾

Question

Which of the following is an example of a chemical change?

Choices

Choice (4) Response

a.

Sublimation

b.

Rusting of iron

c.

Evaporation of water

d.

Dissolution of salt in water

Question number: 10

» Chemistry » Structure of Atom

MCQ▾

Question

Which of the following is the correct electronic configuration of Neon?

Choices

Choice (4) Response

a.

2, 8, 2

b.

2, 8

c.

2, 8, 1

d.

Question does not provide sufficient data or is vague

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