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State whether matter is continuous or particulate.

What is fire solid liquid or gas

Brewery and sugar factory waste alters the quality of a water body. Measurement of all chemicals in the water, that can be oxidized, can be done by

Substances obtained from mineral oil are used to make long continuous chains. These chains are then converted to make threads of various properties. Which of the following can these threads be?

If we keep using water from seas, oceans, rivers, lakes will the water ever get finished?

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

$\begin{array}{cc}\text{1.}& \text{Lustrous and Hard}\\ \text{2.}& \text{Soluble and Opaque}\\ \text{3.}& \text{Translucent and Soft}\\ \text{4.}& \text{Insoluble and Floating}\\ \text{5.}& \text{Sinking and Transparent}\end{array}$

The process by which a solid directly converts into its vapour state is called_______.

Which of the following has the strongest interparticle force of attraction between its particles at room temperature?

Classify these changes into physical and chemical changes. [5 MARKS]

$\begin{array}{cc}\text{S.No}& \text{Changes}\\ 1& \text{Melting of Ice}\\ 2& \text{Dissolving sugar in water}\\ 3& \text{Burning rubber}\\ 4& \text{Burning camphor}\\ 5& \text{Melting of wax}\end{array}$

Which of the following is a fundamental quantity?

What is a water reservoir

Heterogenous mixtures can be separated into their respective constituents by simple physical methods. Identify such methods from the following.

Which of the following material is hard?

Sugar and sand mixed together is an example of:

The most abundant constituent of air is

Sakshi had a mixture of sand and salt. Now Sakshi thought of separating the sand from the salt.How should she do this? [5 MARKS]

Heat caused by the Sun can be

Which of the following is/are solid(s)?

The pollutants released by jet planes are in the form of

Which of the following process is used by blacksmith for making different tools?

The figure shows what type of change?

The husk from rice can be separated by

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If you are given two sample pieces of cloth made of synthetic silk and natural silk which look the same; which among the following tests would you employ to find which silk is natural and which one is synthetic?

In a small town, the number of water pumps, concrete houses and roads increased. What happens to the water table of that place?

Identify the popular water purification technique that is used for purifying drinking water in homes.

Which gas in air is essential for respiration in humans?

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Which crop requires more water to grow compared to wheat and barley?

Why do we need to separate different components of a mixture? Give two examples.

Which of the following activities are possible due to air?

Which separation technique is used to separate the pieces of cheese from cottage cheese mixture containing the chunks of cheese and a liquid?

On the way home one day, Amit saw a man beating bundles of wheat. He was confused - why is the farmer beating around bundles of wheat? What is this process called? Explain the mechanism. [3 MARKS]

Name the technique employed for obtaining salt from sea water.

Sunil and Kavita were playing clapping game (hand clap) as shown in below image. Identify the energy conversion that takes place from the below-mentioned options.

Oil can be separated from water by:

Which of the following dissolves in ethanol?

Which of the following is used to kill rats?

What is the type of the underlined clause?

Whatever you chose will be packed and delivered to you.