Chemistry [NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension]: Questions 1 - 6 of 143

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Question 1

ChemistryMetals & Non Metals

Question MCQ▾

Which of the following elements are more reactive than hydrogen?

Hg, K, Ni, Co, Cu, Pt

Choices

Choice (4)Response

a.

Hg, K, Pt

b.

Cu, Pt, Ni

c.

Hg, Co, Cu

d.

K, Ni, Co

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Question 2

ChemistryMetals & Non Metals

Question MCQ▾

Which metal is the best conductor of electricity?

Choices

Choice (4)Response

a.

Gold

b.

Silver

c.

Aluminum

d.

Sodium

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Question 3

ChemistryMetals & Non Metals

Question Match List-Ⅰ List-Ⅱ▾

Match the following:

List-Ⅰ (Element)List-Ⅱ (Discoverer)
(A)

Barium

(i)

Daniel Rutherford

(B)

Titanium

(ii)

Marie Curie, Pierre Curie

(C)

Polonium

(iii)

William Gregor

(D)

Nitrogen

(iv)

Carl Wihhelm Scheele

Choices

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

a.

  • (iii)
  • (ii)
  • (i)
  • (iv)

b.

  • (iv)
  • (iii)
  • (ii)
  • (i)

c.

  • (iv)
  • (i)
  • (ii)
  • (iii)

d.

  • (i)
  • (iii)
  • (iv)
  • (ii)

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Question 4

ChemistryPhysical and Chemical Changes

Question MCQ▾

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

Choices

Choice (4)Response

a.

Sublimation

b.

Dissolution of salt in water

c.

Evaporation of water

d.

Rusting of iron

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Question 5

ChemistryStructure of Atom

Question MCQ▾

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

Choices

Choice (4)Response

a.

2,8, 1

b.

2,8 , 2

c.

2,8

d.

All of the above

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Question 6

ChemistryStructure of Atom

Question MCQ▾

What are isotopes?

Choices

Choice (4)Response

a.

Elements having different atomic masses but same atomic numbers

b.

Elements having same atomic numbers as well as atomic masses

c.

Elements having same atomic numbers but number of protons is different

d.

Elements having same atomic masses but different atomic numbers

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