Asset Science

Which of the following is/are method(s) of preserving food?

1. freezing of vegetables

2. making pickle with mangoes

3. making sauces with tomatoes

4. washing and cutting vegetables

• only 2

• only 2 and 3

• only 1, 2, and 3

• all of them

Which of the following 'life processes' is seen in animals but not in plants?

• movement

• growth

• respiration

• nourishment

Some sharks have the ability to detect blood even in very tiny quantities from more than a kilometre away.

They use one of the following senses for this. Which of the following could it be?

• hearing

• sight

• smell

• touch

The concept that matches the definition 'the amount of matter in a substance' is.....

• weight

• mass

• kilogram

• gravitational force

Bhoomi looked up at the night sky for 30 minutes. She saw something moving slowly in the sky. At the end of 30 minutes, she could still see this object, but its position had changed. Which of the following could it be?

1. a shooting star

2. a satellite

3. the Moon

4. a cloud

• only 1

• only 2 and 4

• only 2, 3 or 4

• all - 1, 2, 3, 4

Which of these is a chemical reaction?

• Breaking a piece of chalk

• Dissolving sugar in water

• Dicing an onion

• Rusting of iron

What diseases can bacteria cause ?

• Pneumonia

• Polio

• Ringworm

• None of these

What does teeth do ?

• Helps us run

• Helps us chew

• Helps us dance

• None of these

In which of the following pictures is water being used carefully, and not being wasted?

• 
• 
• 
• 

Pervez wanted to copy the shape of a key and so pressed the key on an object for 10 seconds. The shape of the key could then be seen on the object as shown in the figure below.Which of the following could the object be made of?

• metal

• wax

• glass

• stone