CBSE Class-7 Science: Questions 304 - 310 of 322

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Question number: 304

» Electric Current and Its Effects » Heating Effect of Electric Current » Fuse

MCQ▾

Question

Fuse is:

Choices

Choice (4) Response

a.

Fusible wire of short length

b.

Made up of an alloy of lead and tin

c.

Inserted in each gadgets

d.

All a. , b. and c. are correct

Question number: 305

» Light » Images Formed by Lenses » Concave Lens

MCQ▾

Question

Concave lens is also called as:

Choices

Choice (4) Response

a.

Diverging lens

b.

Diverging lens & Converging lens

c.

Converging lens

d.

All of the above

Question number: 306

» Light » Light » Light Travels Along a Straight Line

MCQ▾

Question

Rectilinear propagation of light is:

Choices

Choice (4) Response

a.

Straight line propagation of light

b.

A highly polished reflecting surface

c.

An arrangement to combine colours

d.

None of the above

Question number: 307

» Light » Spherical Mirrors » Real Image and Virtual Image

MCQ▾

Question

Images used in movie projector are:

Choices

Choice (4) Response

a.

Real images

b.

Virtual images

c.

Obtained on a screen

d.

Both a. and c. are correct

Question number: 308

» Electric Current and Its Effects » Symbols of Electric Components » Symbols for Some Electric Circuit Components

MCQ▾

Question

Circuit diagram is defined as:

Choices

Choice (4) Response

a.

A path through which electric current flows

b.

A series combination of two or more cells

c.

A diagram which represent a circuit in terms of the symbols of components used

d.

None of the above

Question number: 309

» Light » Reflection of Light » Right or Left

MCQ▾

Question

Image formed by a plane mirror is of:

Choices

Choice (4) Response

a.

Virtual image

b.

Same image as the object

c.

Image is laterally inverted

d.

All a. , b. and c. are correct

Question number: 310

» Wastewater Story » Sanitation and Disease » Alternative Arrangement for Sewage Disposal

MCQ▾

Question

Onsite arrangements for sewage disposal are:

Choices

Choice (4) Response

a.

Composting pits

b.

Chemical toilets

c.

Septic tanks

d.

All a. , b. and c. are correct

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