NSO Level 1- Science Olympiad (SOF) Class 10: Questions 221 - 226 of 986

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Question 221

Question

Match List-Ⅰ List-Ⅱ▾

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 222

Question

MCQ▾

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 223

Question

MCQ▾

Among the thermal decomposition of materials is

Choices

Choice (4)Response

a.

Carbonation

b.

Catenation

c.

Destructive distillation

d.

Pyrolysis

Question 224

Question

MCQ▾

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 225 (1 of 3 Based on Passage)

Question

MCQ▾

What is element X?

Choices

Choice (4)Response

a.

Halogens

b.

Alkali metal

c.

Alkaline earth metal

d.

Inert gas

Question 226 (2 of 3 Based on Passage)

Question

MCQ▾

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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