NSO Level 1- Science Olympiad (SOF) Class 10: Questions 221 - 225 of 986

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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

Edit
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

Edit
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

Passage

Read the following passage and answer the question.

The X elements are located in-group VIIA of the periodic table, which is the second-to-last column of the chart.

Elements are highly reactive non-metals and highly electronegative, with high electron affinities.

Question number: 225 (1 of 3 Based on Passage) Show Passage

» Periodic Classification of Elements

Edit
MCQ▾

Question

It is correct for halogens.

Elements are highly reactive non-metals and highly electronegative, with high electron affinities.

Choices

Choice (4)Response

a.

Incorrect

b.

Correct

c.

None of the above

d.

Question does not provide sufficient data or is vague

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