Class 10 Biology set (1)

The energy currency of living cells is

• ATP

• AMP

• ADP

• NADP

A by-product of photosynthesis is

• Carbon dioxide

• Oxygen

• Carbon monoxide

• Water

The gastric juice produced by stomach contains the following

• Nitric acid

• Sulphuric acid

• Hydrochloric acid

• Acetic acid

The product of glycolysis is__

• Glucose

• Carbon dioxide

• Pyruvic acid

• Water

Which of the following increases in muscle cells when they lack oxygen?

• Carbon dioxide

• Lactose

• Lactic acid

• Uric acid

Strong heating of ferous sulphate leads to the formation of a brown solid and 2 gasses. This reaction can be categorised as

• Displacement and redox

• Decomposition and redox

• Displacement and endothermic

• Decomposition and exothermic

The metal which can displace copper from copper sulphate solution is

• Hg

• Au

• Fe

• Ag

Which of the following metals fails to evolve hydrogen gas with dilute HCl.

• Zinc

• Iron

• Alluminium

• Copper

Chemically rust is

• Hydrated ferrous oxide

• Hydrated ferric oxide

• Only ferric oxide

• None of these

When zinc metal reacts with sodium hydroxide solution on heating, the gas evolved

• Turns lime water milky

• Supports combustion

• Burns with a pop sound

• Has a pungent odour