CBSE Class-7 Science: Questions 233 - 239 of 322

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Question number: 233

» Soil » Properties of Soil » Absorption of Water by Soil

MCQ▾

Question

In which type of soil if water applied quickly it puddles or run off before being absorbed:

Choices

Choice (4) Response

a.

Clayey soil

b.

Loamy soil

c.

Sandy soil

d.

Question does not provide sufficient data or is vague

Question number: 234

» Respiration in Organisms » Breathing » Breathing Rate

MCQ▾

Question

Our breathing rate increases with:

Choices

Choice (4) Response

a.

Altitude

b.

Age and anxiety

c.

Physical activity

d.

All a. , b. and c. are correct

Question number: 235

» Winds, Storms and Cyclones » Wind Currents » Uneven Heating Between Equator and the Poles

MCQ▾

Question

Uneven heating between the equator and the poles forms

Choices

Choice (4) Response

a.

Westerlies

b.

Trade winds

c.

Wind circulation from the poles to the warmer latitudes

d.

All a. , b. and c. are correct

Question number: 236

» Winds, Storms and Cyclones » Air » Wind

MCQ▾

Question

Moving air is called as:

Choices

Choice (4) Response

a.

Lift

b.

Wind

c.

Wind current

d.

None of the above

Question number: 237

» Winds, Storms and Cyclones » Air » Air Exerts Pressure

MCQ▾

Question

Atmospheric pressure is defined as:

Choices

Choice (4) Response

a.

The pressure exerted by the gases in the atmosphere on the surface of the earth

b.

Moving air

c.

Air that covers the earth in a thick blanket

d.

Force per unit area exerted by a gas

Question number: 238

» Winds, Storms and Cyclones » Air » High Speed Winds and Reduced Air Pressure

MCQ▾

Question

Lift is defined as:

Choices

Choice (4) Response

a.

The less the speed of the wind, the lesser will be the air pressure

b.

The more the speed of the wind, the lesser will be the air pressure

c.

The low pressure created by rising warm air and falling cool air

d.

None of the above

Question number: 239

» Wastewater Story » Waste Water Treatment Plant » Water Clarifier

MCQ▾

Question

In secondary clarifier sludge is used as:

Choices

Choice (4) Response

a.

Manure

b.

Construction materials

c.

Fertilizers

d.

All a. , b. and c. are correct

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