Lets Check Your Knowledge

Which is a method to prevent rust?

• (a) Crystallization

• (b) Sedimentation

• (c) Galvanisation

• (d) None of theseanswers

Which of these is the smallest particle?

• (a) A molecule

• (b) An atom

• (c) A speck of dust

• (d) A water

White light is composed of

• (a) three colours

• (b) seven colours

• (c) five colours

• (d) eight colours

The image formed by spherical mirror is virtual. The mirror will be

• (a) concave

• (b) convex

• (c) either concave or convex

• (d) none of these

Which of the following statement is incorrect for a chemical reaction?

• (a) Heat may be given out but never absorbed

• (b) Sound may be produced

• (c) A colour change may take place

• (d) A gas may be evolved

Which part of plant is called food factory?

• (a) Fruits

• (b) Seeds

• (c) Leaves

• (d) Flowers

The process by which green plants prepare their own food in the presence of sunlight is called

• (a) saprophytic nutrition

• (b) photosynthesis

• (c) cellular nutrition

• (d) nutrition

 The correct way of making a solution of acid in water is to

• (a) add water to acid

• (b) add acid to water

• (c) mix acid and water simultaneously

• (d) add water to acid in a shallow container

Which of the following is not a indicator?

• (a) Phenolphthalein

• (b) Methyl orange

• (c) Litmus

• (d) Methyl chloride

I______this packet to her.(not mail)

(Write in Simple Future Tense)