Question : The common tree species in Nilgiri hills is 

Option 1: Sal

Option 2: Pine

Option 3: Eucalyptus

Option 4: Teak

Question : Most commonly used bleaching  agent is

Option 1: Sodium chloride

Option 2: Alcohol

Option 3: Carbon dioxide

Option 4: Chlorine

Question : The commonly used coolant in refrigerators is

Option 1: Ammonia

Option 2: Nitrogen

Option 3: Freon

Option 4: Oxygen

Question : Growing agricultural crops between rows of planted trees is known as:

Option 1: Social forestry

Option 2: Jhum

Option 3: Taungya system

Option 4: Agro forestry

Question : Red data book contains data of which of the following?

Option 1: All plant species

Option 2: All animal species

Option 3: All endangered species

Option 4: All extinct species