NSO Level 1- Science Olympiad (SOF) Class 10: Questions 248 - 252 of 986

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Question 248

Question

MCQ▾

Which is the not correct for Genetic drift?

Choices

Choice (4)Response

a.

Non-adaptive evolution

b.

Increase genetic variation

c.

Non-directional

d.

Random process

Question 249

Question

MCQ▾

Which are the correct statements for carbon and silicon?

Statement 1: Both carbon and silicon easily sharing electrons with other elements

Statement 2: Silicon forms compounds such as Silene, disilicon hexahydride, silicon tetra fluoride

Statement 3: Carbon forms compounds such as methane, propane, butane, benzene and carbon dioxide

Choices

Choice (4)Response

a.

Statements 1 and 2 are correct

b.

Statements 2 and 3 are correct

c.

Statements 1,2 and 3 are correct

d.

Statements 1 and 3 are correct

Question 250

Question

MCQ▾

Which is not part of the Forebrain?

Choices

Choice (4)Response

a.

Thalamus

b.

Tectum

c.

Hypothalamus

d.

Cerebrum

Question 251

Question

MCQ▾

Three resistances, each of , are joined in parallel. Three such combinations are put in series, and then the resultant resistance will be

Choices

Choice (4)Response

a.

b.

c.

d.

Question 252

Question

MCQ▾

Which is incorrect regarding Hugo de vries?

Choices

Choice (4)Response

a.

Evolution was gradual

b.

Evolution resulted from mutation

c.

Mutations are random and directional

d.

Question does not provide sufficient data or is vague

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