NSO Level 1- Science Olympiad (SOF) Class 10: Questions 71 - 76 of 986

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Question number: 71

» Acids, Bases and Salts

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MCQ▾

Question

If the of the solution is 7, it means that it is ________

Choices

Choice (4) Response

a.

Acid

b.

Base

c.

Neutral

d.

Question does not provide sufficient data or is vague

Question number: 72

» Mental Ability

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MCQ▾

Question

Each boy contributed rupees equal to the number of girls and each girl contributed rupees equal to the number of boys in a class of 60 students. If the total contribution thus collected is Rs. 1600, how many boys are there in the class?

Choices

Choice (4) Response

a.

20

b.

40

c.

60

d.

Data inadequatic

Question number: 73

» Chemical Reactions and Equation

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MCQ▾

Question

Complete the following reaction:

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 74

» Mental Ability

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MCQ▾

Question

A class starts at and last till 5 p. m. Five periods are held during this interval. After every period 10 minutes are given free to the students. The exact duration of each period is ________.

Choices

Choice (4) Response

a.

58 minutes

b.

40 minutes

c.

50 minutes

d.

49 minutes

Question number: 75

» Acids, Bases and Salts

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MCQ▾

Question

pH of the hydrochloric acid is ________that of acetic acid solution of the same concentration.

Choices

Choice (4) Response

a.

More than

b.

Less than

c.

Equal to

d.

None of the above

Question number: 76

» Mental Ability

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MCQ▾

Question

The smallest fraction, which each of .

Choices

Choice (4) Response

a.

b.

c.

d.