Science Quizz

In Chlor-Alkali process, chlorine gas is given off at which electrode?

• Anode

• Cathode

• Both

• None

Guess the compound..

It is a mild non corrosive base, used in making baking powder, soda fire extinguishers.

• Sodium Carbonate

• Ammonium Chloride

• Sodium Hydrogen Carbonate

• Sodium Hydroxide

Which of the following compounds is used in de-greasing metals, paper making, in making soaps and detergents and pretreatment of artificial fibres.

• Sodium Carbonate

• Sodium Hydroxide

• Bleaching Powder

• Sodium Hydrogen Carbonate

What is the common name of Calcium Sulphate hemi-hydrate?

• Gypsum

• Slaked lime

• Plaster of Paris

• Bleaching Powder

Which of the following metals are so soft that they can be cut with a knife?

• Sodium

• Lithium

• Beryllium

• Both (a) and (b)

What is the name of the process of "forming a thick layer of oxide of aluminium to make it resistant to corrosion"?

• Galvanisation

• Anodising

• Alloying

• Greasing

"Bronze" is an alloy of

• Copper & Lead

• Copper & Zinc

• Lead & Tin

• Copper & Tin

What is the effect on Atomic size as we move from left to right (along period) in periodic table?

• Increases

• Decreases

• No change

• padh ke batunga/bataungi

Which one of the following plant harmones inhibits growth?

• Cytokinins

• Abscisic acid

• Auxin

• Gibberellins

Which of the following is a conventional source of energy?

• Wind energy

• Solar energy

• None

• Geo thermal energy