Ant sting contains acid

• Ascorbic acid

• Tartaric acid

• Lactic acid

• Formic acid

What is the color of the precipitate which is formed when aqueous solutions of sodium sulphate and barium chloride are mixed?

• Yellow

• White

• Green

• Orange

3.

Which one is least reactive?

• Iron

• Copper

• Silver

• Gold

Which is not obtained by the destructive distillation of coal?

• Coal gas

• Petroleum

• Ammonia Liquor

• Coal tar

The main function of phloem in plants is to

• translocate food material

• repair the injured parts

• transport water

• help in transpiration

Recently discovered most stable allotropes of carbon is

• C₁₆

• C₆₀

• C₂₀

• C₅₆

Which among the following is amphoteric oxide?

• SnO₂

• CaO

• SiO₂

• CO₂

In ficus, the pollination is affected by

• insects

• air

• water

• birds

Which is the vestigial organ in a man?

• Pinna muscles

• Pinna

• Ileum

• Teeth

Which organ is not helpful in respiration in mammals?

• Ribs

• Abdominal muscles

• Diaphragm

• Larynx