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Fibre is a -

When water evaporates from the water body, the surrounding:

Ideal volume is:

A gas exerts pressure on the walls of its container because

Which of the following statements about a mixture is/are TRUE?

Fabrics are made up of

In one of the stages of wastewater treatment, the solid impurities are allowed to settle down at the bottom. This particular stage in the entire purification is called ___

What are the forms that water can exist in?

Which of the following substances is insoluble in water?

Read both the statements carefully and choose the correct alternative from the options:
Assertion: Synthetic clothes are comfortable to wear in summer.
Reason: They are water repellant.

What is winnowing, sieving, threshing, hand picking

Question 14

On a bright sunny day, Shikha was playing hide and seek with her brother. She hid herself behind a glass door. Do you think her brother will be able to locate her ? If yes, why? If no, why not ?

Out of the following options, which group of substances is made from the same material?

When we heat water, we see bubbles coming out from it. This shows that

Wet clothes kept near heater dries up because of

Statement I: When water is heated, we see bubbles in it.

Statement II: The bubbles are due to air present inside the water.

Choose the synonym of the underlined word in the following sentence.

One of the dwarfs was bashful and never looked the other person in the eye.

Question 5 (b)

Given below are the names of some objects and materials:
Water, basketball, orange, sugar, globe, apple and an earthen pitcher
Group them as:
Eatables and non-eatables

Choose the correct sequence for making of cloth.

Question 3 (a)

Which of the following statement is “true”?
Water vapour is present in air only during the monsoon.

Question 18

Read the story titled “WISE FARMER” and tick the correct option to complete the story. A farmer was sad/happy to see his healthy wheat crop ready for harvest. He harvested the crops and left it under the sun/rain to dry the stalks. To separate the seeds from the bundles of the stalk he handpicked/threshed them. After gathering the seed grains he wanted to separate the stones and husk from it. His wife winnowed/threshed them to separate the husk and later sieved/hand picked to remove stones from it. She ground the wheat grains and sieved/ filtered the flour. The wise farmer and his wife got a good price for the flour. Can you tell why?

Why shoul we use paper bags instead of plastic bags when we also cut down the trees for the paper nag as well

Which of the following is a green house gas?

This is year 348 BC. Aristotle is a famous Greek philosopher and scientist. One day he suddenly wakes up into future - The year 2017. He observes that the world has changed a lot.
Out of the following observations made by him, which observations are examples of change?

Study the table given below.
$\begin{array}{ccc}Mixture& Wanted& unwanted\\ & component& component\\ 1.Wheatflour& Flour& X\\ 2.Y& Grainseeds& Stalks\end{array}$
Based on the above information, identify 'X' and 'Y'.

Why was the apparatus holding the plant covered with a dark cloth in this experiment?

It was rainy season and Karan was enjoying the rain in his garden just when he saw a snake moving towards him. He ran inside at full speed, brought a stick and killed the snake with it. He thinks that the snake was sent to kill him by one of his enemy. Do you think he is right?

Question 17.4

Explain the following observations very briefly

Breathing through mouth may harm you.

Give one example each of the following combinations of properties. [5 MARKS]

What is ground water ?

Which of the following part of the sheep’s fur layer is the softest?

What are the factors responsible for rusting in iron?

For making potato fries, you slice the potatoes (process 1) and deep fry it in oil (process 2). What type of changes are the two processes?

Those phenomena which happen on their own in nature is called as ___ phenomenon.

What are the gases released by the combustion of coal?

Choose the odd one out. Give reason for the same. [1 MARK]
rustling of leaves, flying of kite, making tea

Dissolving of more solute by heating up the solution results in ___ solution.

Question 5
Which set of substance is not used for making fibres?
(a) Silk, chemicals
(b) Yak hair, camel hair
(c) Husk, bones
(d) Flax, wool

Process by which cotton fibres are combed and straightened is called:

A mixture of iron powder and sulphur powder can be separated by:

What are the various factors based on which substances are separated? [1 MARK]

Pick the correctly punctuated form of the given sentence.

What an outstanding performance