NSO Level 2- Science Olympiad (SOF) Class 6: Questions 84 - 87 of 100

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Question number: 84

» Mental Ability

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Appeared in Year: 2013

MCQ▾

Question

Which of the following statements is true about prime numbers?

Choices

Choice (4) Response

a.

There are a finite number of prime numbers.

b.

A whole number is either prime or it can be expressed as a product of primes.

c.

Every prime number is odd.

d.

There is no largest prime number.

Question number: 85

» Electricity and Circuits

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Appeared in Year: 2013

MCQ▾

Question

In given figure, which of the following switches need to be closed to change electrical energy to only sound energy?

Image of The Switch

Image of the Switch

Image of The Switch

Choices

Choice (4) Response

a.

A, B, C, and E

b.

A, B, D, and E

c.

A, C, and E

d.

A, B, and C

Question number: 86

» Changes Around Us

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Appeared in Year: 2013

MCQ▾

Question

Which of the following is correct for weightlessness of an astronaut moving in a satellite?

Choices

Choice (4) Response

a.

No gravity

b.

Zero mass

c.

Free fall

d.

All of the above

Question number: 87

» Sorting and Separation of Materials into Groups

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Appeared in Year: 2013

MCQ▾

Question

There are two mixtures P and Q with the following compositions.

Table of The Mixtures

Table of The Mixtures

Mixture

Components

P

Q

The components of P mixture are separated by technique I while for Q mixture, technique II is used as shown in the figures.

Image of The Filtration & Evaporation

Image of the Filtration & Evaporation

Image of The Filtration & Evaporation

Select the correct statement among the following.

Choices

Choice (4) Response

a.

If more of X is dissolved in Y, then a saturated solution is formed.

b.

If a mixture of X and Z is formed, then more than one method is used to separate the components.

c.

Y is a common solid particle in both the mixtures.

d.

Z and Y can also be separated by sedimentation and decantation.