प्राइम टाइम हिंदी

ITSE Class 3 — Science 2022-23

ITSE (International Talent Search Exam) Class 3 का Science 2022-23 अभ्यास प्रश्न पत्र। 45 questions का free timed mock test — submit करते ही score और explanation। बच्चों की talent exam की तैयारी के लिए।

45 प्रश्न 45 मिनट +4 / 0 अंकन कुल 180 अंक
शेष समय 45:00 0/45 हल
1Vinod watered plant A with normal water and plant B with salt water for a week. Which observation is likely correct?
व्याख्या

Salt water harms plant B.

2Match the types of soil with their properties (1.Loam, 2.Topsoil, 3.Subsoil, 4.Bedrock).
व्याख्या

Loam-best for plants, Topsoil-roots lie here, Subsoil-layer below, Bedrock-hardest layer.

3When should you take utmost care?
सही उत्तर ऊपर चिह्नित है
43rd grade read 1,302 books, 4th grade 987, 5th grade 1,203. How many in total?
व्याख्या

1302 + 987 + 1203 = 3492.

5Which of the following are natural sources of light?
सही उत्तर ऊपर चिह्नित है
6Where is the largest bone in our body present?
व्याख्या

The femur (thigh bone) is the largest.

7Who is the first astronaut to go to the moon?
सही उत्तर ऊपर चिह्नित है
8A PIN code stands for?
सही उत्तर ऊपर चिह्नित है
9Which form of water can we feel, see and crush?
व्याख्या

Ice (solid) can be felt, seen and crushed.

10On a hot day, Radha keeps water in 4 containers. In which will water be coldest?
व्याख्या

A mud pot keeps water cool by evaporation.

11The outermost layer of teeth is called ______.
सही उत्तर ऊपर चिह्नित है
12The figure shows a group of stars. Which term describes a group of stars?
सही उत्तर ऊपर चिह्नित है
13The figure shows the movement of the earth around the sun. Which of the following does it affect most?
सही उत्तर ऊपर चिह्नित है
14The process in which animals enter a state to conserve energy is called ______.
सही उत्तर ऊपर चिह्नित है
15Match living things with their breathing organs (p.Fish, q.Humans, r.Trees).
व्याख्या

Fish-Gills, Humans-Lungs, Trees-Stomata.

16Whose statements about birds are true? (Ruchita: all birds have a beak; Dhaval: all birds have a backbone; Enna: all birds have feathers)
व्याख्या

Not all birds can fly (Aman wrong); all birds lay eggs (Shekha wrong).

17At age 7-8 years, which of these can you do to help your family?
सही उत्तर ऊपर चिह्नित है
18Which of the following is a sense organ of our body?
सही उत्तर ऊपर चिह्नित है
19A carrot plant differs from a marigold plant because it ______.
व्याख्या

Carrot has a tap root that stores food.

20In ENTHUSIASM, interchange 1st&2nd, 3rd&4th, 5th&6th letters. Which is the sixth letter from the right?
व्याख्या

New order: N E H T S U I A S M → 6th from right is S.

21What should we do to minimise the overuse of plastics? (1.Use paper bags 2.Give old plastic toys to others 3.Throw away plastic containers)
सही उत्तर ऊपर चिह्नित है
22Roughage and 'N' are found in rich amount in which of these?
व्याख्या

Roughage (fibre) is found mainly in fruits and vegetables.

23Which of the following statements is true?
सही उत्तर ऊपर चिह्नित है
24Complete the sentence: Worms and small organisms grow mostly in ______.
सही उत्तर ऊपर चिह्नित है
25Complete the following pattern (figure-based).
व्याख्या

⚠ This question depends on a figure/pattern in the original paper that cannot be shown here.

26Why must a taxi driver be more careful on a rainy day than on a hot summer day?
व्याख्या

Wet roads reduce friction (grip).

27Water droplets that are too heavy to float make ______.
सही उत्तर ऊपर चिह्नित है
28Ducks have ______.
सही उत्तर ऊपर चिह्नित है
29Renu's grandmother is seriously ill and needs hospital. Which mode best communicates quickly to her father at his office?
सही उत्तर ऊपर चिह्नित है
30The bird that lays its eggs in the nest of a crow is ______.
सही उत्तर ऊपर चिह्नित है
31Which of the following will NOT dissolve in water?
सही उत्तर ऊपर चिह्नित है
32Soil helps trees because soil ______.
सही उत्तर ऊपर चिह्नित है
33Which of the following pollutes the environment?
सही उत्तर ऊपर चिह्नित है
34In mountain regions, terrace farming is done to control which natural phenomenon?
सही उत्तर ऊपर चिह्नित है
35A student fills a balloon with air. What will he notice?
व्याख्या

Air has mass, so the balloon gets heavier.

36A liquid is tasteless, exists in all three forms, boils at 100°C, freezes at 0°C, colourless and odourless. Which liquid is it?
सही उत्तर ऊपर चिह्नित है
37Categorise as autotrophs/heterotrophs: Mango tree, Lion, Cactus, Pine, Man.
व्याख्या

Plants make their own food (autotrophs).

38Plants not only give us oxygen but also absorb poisonous ______.
सही उत्तर ऊपर चिह्नित है
39Micky: some plants grow in warmer plains and shed leaves in autumn. Donald: tea and coffee are evergreen. Goofy: babul and kikar grow near sea coast with breathing roots. Who is correct?
व्याख्या

Goofy is wrong — mangroves (not babul/kikar) have breathing roots.

40Rabbits, rats and squirrels are all ______.
व्याख्या

They are rodents (gnawing animals).

41Which system is attached to the bone and helps us move and do different kinds of work?
सही उत्तर ऊपर चिह्नित है
42Water and wind break rocks into small pieces. What happens to these pieces?
सही उत्तर ऊपर चिह्नित है
43Look at the diagram of a plant. Which part and its function is labelled wrongly (P/Q/R/S)?
व्याख्या

⚠ This question depends on a labelled diagram in the original paper that cannot be shown here.

44Classification table: Lungs : Nose, Heart : 'X'. Which can 'X' be?
व्याख्या

The heart belongs to the circulatory system (blood vessels).

45Wire netting doors are used ______.
सही उत्तर ऊपर चिह्नित है