NSO Level 1- Science Olympiad (SOF) Class 10: Questions 320 - 323 of 986

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Question number: 320

» Periodic Classification of Elements

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MCQ▾

Question

“The properties of the elements are a periodic function of their atomic weights. ” Statement was said by

Choices

Choice (4)Response

a.

Julius Lothar Meyer

b.

Henry Moseley

c.

Dmitri Mendeleev

d.

Lewis Reeve Gibbes

Question number: 321

» Periodic Classification of Elements

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MCQ▾

Question

Read the given statements and mark the correct option.

Statement 1: According to Newland’s Law of Octaves “the elements are arranged in such a way that the eighth element starting from a given one has properties which are a repetition of those of the first if arranged in order of increasing atomic weight like the. Eight note of musical scale. “

Statement 2: Mendeleev arranged 60 elements known at that time in the periodic table

Choices

Choice (4)Response

a.

Statements 1 and 2 are correct

b.

Statements 1 and 2 are incorrect

c.

Only statement 1 is correct

d.

Only statement 2 is correct

Question number: 322

» Heredity and Evolution

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MCQ▾

Question

The movement of alleles from one population to another is known as

Choices

Choice (4)Response

a.

Selection

b.

Gene Flow

c.

Adaptation

d.

Genetic load

Question number: 323

» Life Processes

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MCQ▾

Question

All basic life functions including heartbeat, blood pressure and breathing are originate in the

Choices

Choice (4)Response

a.

Cerebellum

b.

Pons

c.

Brain stem

d.

Cerebrum

Developed by: