NSO Level 1- Science Olympiad (SOF) Class 10: Questions 220 - 224 of 986

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Question number: 220

» Periodic Classification of Elements

Edit
MCQ▾

Question

Which of the following do not belong to same group?

Choices

Choice (4) Response

a.

K, Cs, Fr

b.

Co, Rh, Ir

c.

F, Cl, Br

d.

Fr, Ra, Ac

Question number: 221

» Periodic Classification of Elements

Edit
Match List-Ⅰ List-Ⅱ▾

Question

Match both the columns and mark the correct option from the codes given below.

According to Mendeleev periodic law set elements in correct group.

List-Ⅰ (Elements) List-Ⅱ (Group)

(A)

Aluminium

(i)

Group III

(B)

Uranium

(ii)

Group VII

(C)

Potassium

(iii)

Group I

(D)

Manganese

(iv)

Group VI

Choices

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

a.

  • (ii)
  • (i)
  • (iv)
  • (iii)

b.

  • (i)
  • (iv)
  • (iii)
  • (ii)

c.

  • (ii)
  • (iii)
  • (iv)
  • (i)

d.

  • (iii)
  • (ii)
  • (iv)
  • (i)

Question number: 222

» Electricity

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MCQ▾

Question

A wire has a resistance of 12 ohm. It is bent in the form of equilateral triangle. The effective resistance between any two corners of the triangle is

Choices

Choice (4) Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Question number: 223

» Carbon and Its Componds

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MCQ▾

Question

Among the thermal decomposition of materials is

Choices

Choice (4) Response

a.

Carbonation

b.

Catenation

c.

Destructive distillation

d.

Pyrolysis

Question number: 224

» Periodic Classification of Elements

Edit
MCQ▾

Question

Elements react with elements to form a divalent halite. The X and Y is

Choices

Choice (4) Response

a.

X - Cl, Y - Ca

b.

c.

X - Mg, Y - Na

d.

X - Zn, Y - N