Chemistry-Periodic Classification of Elements (NTSE Stage-1 (State-Level) Scholastic-Aptitude & Language Comprehension): Questions 21 - 23 of 23

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Question number: 21

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Consider the following statements

I. A freshly prepared mixture of 1: 3 ratio of cone HNO3: cone HCl.

II. Highly corrosive, fuming liquid.

III. It can dissolve all metal even Au and Pt.

The incorrect statements are

Choices

Choice (4) Response

a.

II and III

b.

I and II

c.

I, II and III

d.

None of the above

Question number: 22

» Chemistry » Periodic Classification of Elements

MCQ▾

Question

Elements given below forms a group alike except one. Identify the odd one.

Holmium, Copernicium, Kryptonite, Berkelium

Choices

Choice (4) Response

a.

Copernicium

b.

Holmium

c.

Kryptonite

d.

Berkelium

Question number: 23

» Chemistry » Periodic Classification of Elements

Match List-Ⅰ List-Ⅱ▾

Question

Match the following
List-Ⅰ (Reactants) List-Ⅱ (Products)

(A)

CuO+H2

(i)

FeS(s)

(B)

ZnCO3 (s

(ii)

Cu+H2O

(C)

Fe(s)+S(s)

(iii)

ZnO(s)+CO2(g)

(D)

BaCl2(aq)+K2SO4(aq)

(iv)

BaSO4(s)+2KCl(aq)

Choices

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

a.

  • (iv)
  • (i)
  • (ii)
  • (iii)

b.

  • (ii)
  • (iii)
  • (i)
  • (iv)

c.

  • (iv)
  • (ii)
  • (iii)
  • (i)

d.

  • (iii)
  • (iv)
  • (ii)
  • (i)

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