A freely suspended magnet always comes to rest in the ________direction

(a)

North - east

(b)

South - west

(c)

East - west

(d)

North - south

Around 97% of water available on earth is________ water

(a)

fresh

(b)

pure

(c)

salty

(d)

polluted

Which of the following processes add water vapour to the atmosphere?
i. Transpiration
ii. Precipitation
iii. Condensation
iv. Evaporation

(a)

ii and iii

(b)

ii and iv

(c)

i and iv

(d)

i and ii

Gypsum is added to the cement for_______.

(a)

fast setting

(b)

delayed setting

(c)

hardening

(d)

making paste

Producers are________

(a)

Animals

(b)

Birds

(c)

Plants

(d)

Snakes

It is an undesirable change that occurs in air and water.

(a)

Recycling

(b)

Reuse

(c)

Pollution

(d)

Reduce

Which of the following medicinal plants has anticancer properties?

(a)

Amla

(b)

Tulasi

(c)

Turmeric

(d)

Aloe

Which is the national tree of India?

(a)

Neem tree

(b)

Jack tree

(c)

Banyan tree

(d)

Mango tree

Which of the following is correct?

(a)

Free and Open source

(b)

Free and Traditional software

(c)

Passive and Open source

(d)

Passive and Traditional source

LINUX is a

(a)

Paid Software

(b)

Licensed Software

(c)

Free and Proprietary software

(d)

Free and Open source software

A magnet always has __________ poles.

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two

Only _____percent of natural water is available for human consumption.

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3

Water, coconut oil and __________ are necessary for soap preparation.

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Sodium hydroxide

The 3R’s are Reduce, __________ and Recycle.

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 Reuse

The edible seeds of leguminous plants are called_________.

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Pulses.

Flood

(1)

Input Device

Fertilizers

(2)

Increased rain fall

Phenol

(3)

C₆H₅ OH

Software

(4)

NPK

Keyboard

(5)

Geogebra

Take out of cooled bottle of water from refrigerator and keep it on a table. After some time you notice a puddle of water around it. Why?

What are the two different types of molecules found in the soap?

Define ecosystem.

What are the pollutions caused by the objects given below?
a. Loud Speaker
b. Plastic

Name any three medicinal plants, which are available in your area?

You are provided with iron filings and a bar magnet without labelling the poles of the magnet. Using this...
a. How will you identify the poles of the magnet?
b. Which part of the bar magnet attracts more iron filings? Why?

About 71% of earth’s surface is covered with water, then why do we face scarcity of water?

When there is no pond or lake in an area, will there be formation of clouds possible in that area?

Why earthworm is called as farmer’s friend?

Write the importance of the food chain.

Write the uses of neem?

What is Hardware and Software?

You are provided with an iron needle. How will you magnetize it ?

What is potable water? List down its characteristics.

What is rainwater harvesting? Explain in a few sentences how it can be used in houses.

How are detergents manufactured?

Give two examples of how you can avoid or reduce waste?

Comment on importance of plant animal interaction.