Gr 7 ASSET Mock test-3

Bacteria help to make which one of the following?

• Ice cream

• Soap

• Curd

• Cooking oil

Identify the chemical change among the following:

• Mixing sand in water

• Magnetizing a piece of iron

• A copper container getting tarnished

• Evaporation of water

Here is the picture of an animal called a giant mammoth which is now not found anymore.

Replace the underlined words by the correct scientific term.

• history

• extinct

• herbivore

• Archaeology

As a precaution while heating a solution in a test tube, you should __________________.

• hold the test tube with two fingers so that it remains stable

• smell the liquid to check whether its property is changing

• hold the test tube in such a way that the solution is directly visible

• point the test tube away from you so that the liquid does not splash up on you

Which of these statements gives a correct reason as to why our body needs water?

• only 1 and 2

• only 1 and 3

• only 2 and 3

• all - 1, 2 and 3

Ayesha is travelling in a train. As she is looking out of the window, another train on an adjacent track moving in the same direction, overtakes her train. Which of the following is TRUE?

• To Ayesha, the other train will appear to be travelling FASTER than it actually is.

• To Ayesha, the other train will appear to be travelling SLOWER than it actually is.

• To Ayesha, the other train will appear to be travelling AT THE SAME SPEED as it actually is.

• To Ayesha, the other train will appear to be travelling in the opposite direction.

Shown in the picture is a separating funnel.

Which of these mixtures can be separated using this funnel?

• 3 and 4

• 4 and 5

• 1 and 5

• 2

Madhav made a list of substances that are compounds. However, one of them in his list is an element. Which one is that?

• Sugar

• Candle wax

• Gold

• Water

3 ice cubes of similar shape and size were kept on three different surfaces - glass, copper and concrete. The first to completely melt was the cube on the copper surface, while the one on the glass surface melted last. Arrange Copper, Glass and Concrete from WORST heat conductor to BEST.

• copper, glass, concrete

• glass, concrete, copper

• copper, concrete, glass

• concrete, copper, glass

Bhargav rolled a ball on a floor. The ball stopped moving by itself after a while and came to rest. The ball came to rest because______________.

• somebody stopped the ball

• of the force of friction

• Bhargav rolled the ball slowly

• the floor was not smooth