A) Oil in water done clear
B) Cornflakes in milk done clear
C) Salt in water done clear
D) Sugar in milk done clear
View Answer play_arrowquestion_answer2) What is used in a torch?
A) Dry cell done clear
B) Secondary cell done clear
C) Generator done clear
D) Fuse done clear
View Answer play_arrowquestion_answer3) Which of the following is a magnetic material?
A) Aluminum done clear
B) Zinc done clear
C) Copper done clear
D) Nickel done clear
View Answer play_arrowquestion_answer4) Transpiration is a process in which plants
A) receive water from soil done clear
B) absorb water vapor from air done clear
C) prepare food from water done clear
D) release water vapor done clear
View Answer play_arrowquestion_answer5) The components of air which are harmful to living beings are:
A) nitrogen and carbon dioxide done clear
B) dust and water vapor done clear
C) dust and smoke done clear
D) smoke and water vapor done clear
View Answer play_arrowquestion_answer6) In which of the following cases will evaporation of water be slowest?
A) A tray of water kept in sunlight done clear
B) A kettle of water kept on a burner done clear
C) A glass of water kept in a room done clear
D) A bucket of water kept on rooftop done clear
View Answer play_arrow| (i) Plastic bags |
| (ii) Newspapers and journals |
| (iii) Screw and nuts |
| (iv) Vegetable peels |
| (v) Metal chips |
| (vi) Egg shells |
A)
| RED | GREEN | BLUE |
| (i) and (iv) | (ii) and (iii) | (v) and (vi) |
B)
| RED | GREEN | BLUE |
| (i) and (iii) | (ii) and (iv) | (iv) and (vi) |
C)
| RED | GREEN | BLUE |
| (i), (iii) and (v) | (iv) and (vi) | (ii) only |
D)
| RED | GREEN | BLUE |
| (i) and (v) | (ii) and (iv) | (iii) only |
A) 
done
clear
B) 
done
clear
C) 
done
clear
D) 
done
clear
| (i) excrete small amount of urine |
| (ii) excrete large amount of urine |
| (iii) excrete concentrated urine |
| (iv) excrete very dilute urine |
A) (i) and (iii) done clear
B) (ii) and (iv) done clear
C) (i)and(iv) done clear
D) (i) and (ii) done clear
View Answer play_arrowA) Dog done clear
B) Snail done clear
C) Earthworm done clear
D) Human bein done clear
View Answer play_arrow| Answer the following questions in one word or in a sentence only, |
| (i) Which of the things in the following list are non-living? |
| Plough, Mushroom, Sewing machine. Radio, Boat, Water hyacinth. Earthworm |
| Answer the following questions in one word or in a sentence only, |
| (ii) What are the conditions for the formation of shadow? |
| Answer the following questions in one word or in a sentence only |
| (iii) It was observed that a pencil sharpener gets attracted by both the poles of a magnet although its body is made up of plastic. Name a material that might have been used to make some part of it. |
| Answer the following questions in one word or in a sentence only |
| (iv) Which is the most abundant gas in our atmosphere? |
| Answer the following questions in one word or in a sentence only |
| (v) What do you understand by the segregation of garbage? |
| Answer the following questions in one word or in a sentence only |
| (vi) In a number of musical instruments, air plays an important role. Can you name some such instruments? |
question_answer18) How will you test that 'tea dust' is not adulterated with iron powder?
View Answer play_arrowquestion_answer19) How do fish and aquatic plants survive in water?
View Answer play_arrowquestion_answer20) Is winnowing possible in a closed room? Give reason.
View Answer play_arrowquestion_answer21) Do you think it is better to use compost instead of chemical fertilizers? Why?
View Answer play_arrowquestion_answer22) How do rats and snakes escape from the intense heat of the desert?
View Answer play_arrow| Read the poem written below and then answer the questions given below : |
| Blue and Green |
| Two bins, you mean? |
| Yes, they are there |
| to throw your waste. |
| But not in a hurry |
| Nor in a haste. |
| Select from waste, sieve if seems muddy |
| Separate all items and when they are ready |
| Place in a blue bin, or one that is green |
| For a voyage to the landfill, or for composting. |
| (i) Name the two kinds of waste that need to be separated from each other in two different waste bins. |
| (ii) Name two items of waste that need to be sent to a (a) landfill, (b) for composting. |
| Write just a few sentence for an imaginary situation if any of the following gases disappear from the atmosphere: |
| (a) oxygen |
| (b) nitrogen |
| (c) carbon dioxide |
| Which of the following statements are true and which ones are false? |
| (a) Water vapor is present in air only during the monsoon. |
| (b) Water evaporates into air from oceans, rivers and lakes but not from the soil. |
| (c) The process of water changing into its vapor is called evaporation. |
| Fig. A and B, show a bulb connected to a cell in two different ways. |
 |
| (i) What will be the direction of the current through the bulb in both the cases. (Q to P or P to Q) |
| (ii) Will the bulb glow in both the cases? |
| (iii) Does the brightness of the glowing bulb depend on the direction of current through it? |
| (i) Rearrange the boxes given below to make a sentence that helps us to understand opaque objects: |
 |
| (ii) In a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror? |
| Read the features of plants given below : |
| (a) Thick waxy stem |
| (b) Short roots |
| (c) Cone shaped plants |
| (d) Sloping branches |
| (e) Small or spine-like leaves |
| (f) Hollow stem |
| Choose the type of plant for every feature given in a, b, c, d, e and f from the list given below: |
| Aquatic plant. Desert plant. Mountainous plant |
| Which of the non-living things listed below, were once part of a living thing? |
| Butter, Leather, Soil, Wool, Electric Bulb, Cooking oil. Salt, Apple, Rubber. |
| Provide one word answers to the statements given below: |
| (a) Help in the movement of body by contraction and relaxation. |
| (b) Bones that join with chest bone at one end and to the backbone at the other end. |
| (c) Framework of bones which gives shape to our body. |
question_answer32) Differentiate between creepers and climbers.
View Answer play_arrowquestion_answer35) Write the main drawbacks of plastics.
View Answer play_arrow| Observe Fig. and attempt the questions that follow it. |
 |
| (a) Label the parts 1, 2, 3 and 4 in the diagram. |
| (b) What type of venation does the leaf have? |
| (c) What type of venation is seen in grass leaves? |
question_answer37) What is shadow? Explain a simple process for shadow formation.
View Answer play_arrow
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