Question

plants cannot take ____________ directly from atmosphere

1 point

Nitrogen

Oxygen

Carbon dioxide

Hydrogen

Bread mould is an example of

1 point

Virus

Bacteria

Fungus

Protozoa

Preparation of soil is important because:

1 point

Loose soil allows the root to breathe

Loose soil allows roots to penetrate

Loose soil helps in the growth of earthworm and microbes

All of the above

synthetic fibres are prefered over natural fibres because

1 point

they are more durable

they are comfortable to wear

they do not catch fire

they absorb sweat

Which of the following represents the correct match?

1 point

Nylon is thermosetting plastic, PVC is fibre, bakelite is thermoplastic

Nylon is fibre, PVC is thermoplastic, bakelite is thermosetting plastic

Nylon is thermosetting plastic, PVC is thermoplastic, bakelite is fibre

Nylon is fibre, PVC is thermosetting plastic, bakelite is thermoplastic

Which one of the following is a thermosetting plastic?

1 point

PET

Acrylic

Melamine

Polylactide

Synthetic plastics lead to

1 point

water pollution

air pollution

solid waste pollution

all the above

A group of the population that are capable of interbreeding is known as:

1 point

Species

Flora

Sal

Fauna

which of the following is harmful for the existence of endemic species in their natural habitat?

1 point

destruction of habitat

introduction of new species in their habitat

both a and b

none of the above

Sal, teak and wild mango are the

1 point

endemic species of Pachmarhi Biosphere Reserve

extinct species of Pachmarhi Biosphere Reserve

exotic species of Pachmarhi Biosphere Reserve

none of the above

Why do people visit national parks in well-protected vehicles?

1 point

Animals move freely inside a national park

There are well-built roads inside a national park

To enjoy the ride in a different vehicle

The tourists are lazy to walk

The process in which sugar in the food is transformed into alcohol and carbon dioxide by using microorganisms is known as

1 point

transformation

beverage

fermentation

respiration

If you were a farmer, which of the following methods will you use to separate good quality and viable grains from a heap of grains after harvest?

1 point

Checking the weight of grains.

Checking grains under sunlight for pores.

Immersing the grains in water.

Sowing seeds and waiting for germination.

__________________ is the process of separating grains from chaff.

1 point

Winnowing

storage

Row 1

Row 1

1. PET is a popular form of ____________________

1 point

cotton

polyester

Row 1

Row 1

________________ is the causative agent of Rust of wheat.

1 point

Fungus

Amoeba

Row 1

Row 1

Oil is used in pickles as a ________________________.

1 point

colouring agent

Preservative

Row 1

Row 1

_______________ bacterium promotes the formation of curd.

1 point

E. coli

Lactobacillus

Row 1

Row 1

The system of irrigation in which the water falls drop by drop at the roots is called ._______________________ system.

1 point

Drip

Sprinkler

Row 1

Row 1

Dried ___________ leaves are used for storage of grains at home.

1 point

Mango

Neem

Row 1

Row 1

_________________ principle can help to minimize plastic waste

1 point

4 S

4 R

Row 1

Row 1

The green coating that develops on copper when it is exposed to moist air is a mixture of copper hydroxide and ______________________________

1 point

copper carbonate

copper chloride

Row 1

Row 1

the metal which is liquid at room temperature is ______________________

1 point

Mercury

Sodium

Row 1

Row 1

Plastic is a ______________ like synthetic fibres.

1 point

harmful chemical

polymer

Row 1

Row 1

match the following:

9 points

Fertilizer

Rabi crop

Alexander Fleming

Chemical Preservative

Loosening of soil

Plants

Blankets

breathing

non stick coating

Mustard

Hoe

Potash

Sodium metabisulphite

Penicillin

Oxygen

Magnesium

Teflon

Acrylic

Mustard

Hoe

Potash

Sodium metabisulphite

Penicillin

Oxygen

Magnesium

Teflon

Acrylic

Tetracycline is an antibody

1 point

true

false

Row 1

Row 1

Rhizobium lives in the nodules of leguminous plants.

1 point

true

false

Row 1

Row 1

Now a days Cultivator is used for ploughing

1 point

true

false

Row 1

Row 1

Plastics can corrode easily like metals

1 point

True

False

Row 1

Row 1

Metallic oxides turns red litmus to blue

1 point

True

False

Row 1

Row 1

Non- metals are used as fertilizers

1 point

True

False


​

Answer 1

Answer:

ans 1 carbon dioxide

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Answer 2

Answer:

1.nitrogen

2.fungus

3.all....

4.they they do not catch

so bigg

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