Honeybee makes honey from

Read the food items given below.
(i) Wheat 
(ii) Ghee
(iii) lodised salt 
(iv) Spinach (palak)
Which of the above food items are energy giving foods?

Twisting of fibres makes them:

Which among the following are commonly used for making a safety pin?

Corn is separated from husk by the process of

Salt can be separated from its solution (salt dissolved in water), because:

The part of the stem in between two successive nodes is_________?

A fluid forming an incompressible skeleton is found in____________.

Which of the following is an incorrect statement about excretion?

One decametre is equal to

By which device you can see image of sun?

_________is the positive terminal of an electric cell.

Magnets have a shape of

Which one is the purest form of water?

What is not true about air?

Which one of the following is not a method of disposal of garbage?

Cooking of food is necessary. Why?

Give the name of two components of food which provide energy.

In ancient times stitching was not known. People used to simply drape the fabrics around different parts of their body. Even today a number of unstitched fabrics are used by both men and women. Can you give four such examples of clothes?

Which among the following materials would be identify as soft materials and why? 
Ice, rubber band, leaf, eraser, pencil, pearl, a piece of wooden board, cooked rice, pulses and fresh chapati

Winnowing is based on which property?

When the ice melts? Is it reversible?

Do all the leaves have petioles?

Comparing an earthworm and a snail, explain which of the two moves faster?

What is an adaptation?

During rolling of a ball, which type of motion is performed?

Do the shadows look different in colour when the colours of the objects are different?

The moment you switch on the torch, which part of the bulb glows?

Draw three types of magnets. Label their poles.

Which liquid is called universal solvent and why?

Oxygen and nitrogen form 99% of the air. Other 1% is constitute by which components?

Define vermicomposting.

Can you identify the major ingredients of pizza. Which of the ingredients of pizza
(a) come from plants
(b) do not come from plants

Tasty food is not always nutritious and nutritious food may not always be tasty to eat. Comment with examples.

How are synthetic fibres more advantageous and economical than natural fibres?

Pick five objects from the word box given in Fig. which are opaque and would sink in water.

What is sedimentation? Give an example.

In places, such as the mountains, where temperatures get very low during winters, the plastic pipes meant for water transportation break. Why do you think it happens?

Identify A, B, C and D the figure given below.

How many bones does middle finger have?

List some characters which make birds the flying.

Will the measurement of a room using foot of different persons be equal or not?

Differentiate between a shadow and an image.

Why do bulbs have two terminals?

Boojho kept a magnet close to an ordinary iron bar. He observed that the iron bar attracts a pin as shown in figure.

What inference could he draw from this observation? Explain.

Take out a cooled bottle of water from refrigerator and keep it on a table. After sometime you notice a puddle of water around it, why?

A transparent glass window appears hazy when not wiped off regularly. Can you suggest a reason?

Why should we not burn plastic items?

Connect the animal with the food it eats by an arrow using different colours in Fig. One is done for you.

Radha came back from school hungry and went to her mother in kitchen. Radha's mother was peeling vegetables. She noted that the peels were very thick and her mother then started washing vegetables. Radha asked her to stop washing the vegetables. Her mother was surprised and asked why? Radha told her all she knew about how nutrients are washed away if we peel and then wash them?
(a) If thick peels are removed from vegetables, what happens?
(b) Washing of vegetables after peeling is not a good practice. Can you tell why?
(c) What are those components that get washed away?
(d) Give two examples of vitamins and minerals containing food.
(e) Do you think Radha has any values? Name them.

Classify the following fibres as natural and synthetic: Acrylic, Wool, Jute, Polyester, Rayon. Give reason also.

Chalk, iron nail, wood, aluminium, candle, cotton usually look different from each other. Give some properties by which we can prove that these materials are different.

Paheli was feeling thirsty but there was only a pot of water at home which was muddy and unfit for drinking. How do you think Paheli would have made this water fit for drinking if the following materials were available to her?
Alum, tub, muslin cloth, gas stove, thread, pan and lid.

Paheli mixed flour and water and
(a) made a dough,
(b) rolled the dough to make a chapati,
(c) baked the chapati on a pan,
(d) dried the chapati and ground it in a grinder to make powder.
Identify the changes (a) to (d) as the changes that can be reversed or that cannot be reversed.

Observe figure and attempt the questions that follow it.

(a) Label the parts (i), (ii), (iii) and (iv) in the figure.
(b) What type of venation does the leaf has?
(c) What type of venation is seen in grass leaves? 

Rishi was playing football with his friends. While playing football he fell down and started crying. On seeing him crying, his friends rushed to him and found that he was unable to move his right leg. His friends took him to his house. His father immediately rushed him to a doctor. Doctor diagnosed that his leg was fractured.
(a) Can you suggest, how did doctor diagnose in Rishi's leg?
(b) What do X-rays show us?
(c) What are the values shown by Rishi's friends?

Like many animals although a car also moves it is not considered as a living organism. Give two or three reasons.

How can we find the length of a curved line? Explain.

Explain about solar eclipse and lunar eclipse. Also, give the ray diagrams.

Boojho has a cell and a single piece of connecting wire. Without cutting the wire in two, will he be able to make the bulb glow? Explain with the help of a circuit diagram.

Given below is a figure which shows a magnetic compass. Briefly explain what will happen to the position of its needle if you bring a bar magnet near it. Also, draw a diagram to show the effect on the needle on bringing the bar magnet near it. Also, draw the diagram to show the effect when the other end of the bar magnet is brought near it.

Draw a diagram to show how sea water reaches a lake or pond?

Give an experiment to show that one-fifth of air is oxygen.

Municipality provides two types of dustbins for garbage collection. One blue coloured and one green coloured. Among the following wastes provided which, waste will you put in which dustbin?
Plastic materials, metal and glass items, waste of plants and animals, peels of fruits and vegetables, dried leaves and twigs, remains of meat like flesh and bones.