NSO Level 1- Science Olympiad (SOF) Class 10: Questions 225 - 230 of 986

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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

Question number: 226 (2 of 3 Based on Passage) Show Passage

» Periodic Classification of Elements

Edit
MCQ▾

Question

Which is not a halogen element?

Choices

Choice (4) Response

a.

Iodine

b.

Fluorine

c.

Sodium

d.

Bromine

Question number: 227 (3 of 3 Based on Passage) Show Passage

» Periodic Classification of Elements

Edit
MCQ▾

Question

What is element X?

Choices

Choice (4) Response

a.

Halogens

b.

Alkali metal

c.

Alkaline earth metal

d.

Inert gas

Question number: 228

» Heredity and Evolution

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MCQ▾

Question

Parallel evolution occurs when

Choices

Choice (4) Response

a.

Related spaces evolve similar features independently

b.

One ancestral stock evolves into two species

c.

Natural selection that favors same structure in different ancestors

d.

None of the above

Question number: 229

» Life Processes

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MCQ▾

Question

Blood travels twice through the heart in one complete cycle of the body called

Choices

Choice (4) Response

a.

Double Circulation

b.

Pulmonary Circulation

c.

Systemic circulation

d.

Question does not provide sufficient data or is vague

Question number: 230

» Carbon and Its Componds

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MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: Biogas is primarily methane and carbon dioxide and hydrogen sulphide

Statement 2: Petroleum, coal and natural gas are fossil fuels.

Choices

Choice (4) Response

a.

Only statement 2 is correct

b.

Statements 1 and 2 are incorrect

c.

Only statement 1 is correct

d.

Statements 1 and 2 are correct