SCIENCE  QUESTIONS FOR COMPETITIVE EXAMS

1.Identify the Excretory organ from the following:

A. Brain

B. Liver

C. Heart

D. Skin

2.Identify the Tribals that are skillful in making jute cloths

A. Chenchu’s

B. Koya’s

C. Bonda’s

D. Gond’s

3.Democratic country is ruled by

A. Kings

B. Representatives elected by people

C. People elected by representatives

D. Queens

4.The following is not a planet

A. Earth

B. Venus

C. Pluto

D. Neptune

5.Identify the blood cells that are helpful in blood coagulation in our body

A. Red blood cells

B. Black blood cells

C. White blood cells

D. Platelets

6.The following is not an extincting animal

A. Kalivi kodi

B. Punganuru

C. Battameka pakshi

D. Monkey

7.Fats are more in this food

A. Ragi

B. Fruits

C. Vegetables w

D. Ghee

8.Identify the gas that animals absorb by lungs from air

A. Dust

B. Carbondioxide

C. Oxygen

D. Water vapour

9.Nearest planet to sun is

A. Venus

B.Earth

C. Mercury

D. Jupiter

10.The air around earth is called

A. Thermosphere

B. Atmosphere

C. Mesosphere

D. Troposphere

11.Dermatologist is a specialist deals with this organ

A. Teeth

B. Skin

C. Heart

D. Kidneys

12.Identify the part that is not in respiratory system

A. Heart

B. Nose

C. Wind pipe

D. Lungs

13.Identify the,’chemical change ‘from the following

A. Rusting of iron

B. Melting of ice

C. Sugar dissolved in water

D. Boiling of water

14.Match the following table.

15.Identify the correct one regarding forests.

I. Non-renewable natural resources

II. Plays an important role in the maintenance of ecological balance

III. Control soil erosion

IV. Help in causing rain

16.Identify the  correct pair from the following

A. Grapes—Oxalic Acid

B. Butter milk—Oleic Acid

C. Spinach—Ascorbic Acid

D. Tamarind—Tartaric Acid

17.Identify the correct sentence from the following.

A. Hot air is heavier than cold air

B. Air contracts on heating g and expands on cooling

C. Uneven heating on the earth causes wind movements

D. Cooler air moves from low pressure area to high pressure area

18.The metal that is used in the manufacturing of filament of electric heater is

A. Iron

B. Nichrome

C. Copper

D. Tungten

19.The device that is used to measure humidity is

A. Anemometer

B. Hydrometer

C. Pulvinometer

D. Anthrometer

20.The soil with equal proportion of a large and fine particles is

A. Clayey Soil

B. Loam Soil

C. Sandy Soil

D. Rocky Soil

21.Identify the plant with complete flowers

A. Ipomoea

B. Bitter gourd

C. Papaya

D. Cucumber

22.Identify the plant that disperse seeds by water.

A. Milky weed

B. Tridox

C. Lotus

D. Dandelion

23.The process off removing of hair or fleece from the body of sheep is called as

A. Scoring

B. Bleaching

C. Spinning

D. Shearing

24.Find out the odd one based on the food component present in it

A. Rice

B. 🥔

C. 🥚

D. Roti

25.The number of images formed when the angle between two plane mirrors is 90^o

A. 4

B. 3

C. 6

D. 2

26.Which of the following is having both translatory and rotatory motions?

A. Motion of baldes of a ceiling fan

B. Motion of a potters wheel

C. A bouncing ball

D. A rolling ball 

27.Identify the incorrect sentence from the following.

A. Roughages prevents constipation

B. Carbohydrates are energy giving nutrients

C. Balanced diet is required only for adults

D. Eating of junk food damages the digestive system

28.The following horizon of soil that is called as top soil

A. O-Horizon

B. A-Horizon

C. E-Horison

D. R-Horizon

29.The device that works by converting electric energy into mechanical energy

A. Electric bulb

B. Electric heater

C. Iron box

D. Ceiling fan

30.The method of treating the filtered water by adding chlorine tablets

A. Chemical Process

B. Physical Process

C. Biological Process

D. Aeration Process

31.Identify the incorrect pair from the following

A. Bryophyllum-Leaf buds

B. Yeast-Budding

C. Onion-Bulbs

D. Potato-Root buds

32.Identify the correct sentence from the following

A. The image that can obtain on the screen is called virtual image

B. There will be a concave mirror behind the bulb of torch light

C. Reflection from a rough surface form regular reflection

D. Dentists use plane mirrors to observe backside of our teeth

33.The substance formed when Magnesium strip/ribbon burns in the presence of Oxygen is

A. Magnesium oxide

B. Magnesium hydroxide

C. Magnesium carbonate

D. Magnesium sulphate

34.The organisms that obtain nutrients from decaying matter are

A. Autotrophs

B. Carnivorous

C. Saprophytes

D. Insectivorous

35.The respiratory organs of the cockroach is

A. Gills

B. Skin

C. Trachea

D. Lungs

36.The gas released when metals like copper and zinc are added to lemon juice is

A. Oxygen

B. Hydrogen

C. Carbon dioxide

D. Nitrogen