Taj Mahal is greatly affected due to :
1). Tourists
2). Acid rain
3). Deforestation
4). Sound pollution
The isotope used for the production of atomic energy is
1). U-235
2). U-238
3). U-234
4). U-236
Which of the following is used in making smoke bombs?
1). Sulphur
2). Phosphorus
3). Hydrogen
4). Carbon
The natural source of hydrocarbon is
1). Crude oil
2). Biomass
3). Coal
4). Carbohydrates
When a spoon is to be electroplated with nickel the spoon is
1). dipped in a nickel sulphate solution
2). made anode and a pure nickel rod the cathode
3). made cathode and a pure nickel red the anode
4). coated with nickel sulphate and dried