Question # 1

Which one among the following methods is not effective in removing arsenic form contaminated ground water?

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Boiling

Reverse osmosis

Ton exchange

Coagulation-adsorption

Electric current in a metal wire is due to due to the flow of:

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Protons

Electrons

Ions

None of these

Which one of the4 following scientists made Nylon?

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W.H. Carothers

Walter Hunt

C.F Kettkekring

W.L. Judson

Which one of the following is used in the preparation of antiseptic solution?

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Iodine

Potassium Chloride

Potassium nitrate

Who in witnessing a supernova, argued that the heavens are not changeless?

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Tycho Brahe

Thomas Edison

James Chadwick

Albert Einstein

''Green House effect'' Means:

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Pollution in houses in tropical regions

Trapping of solar energy due to atmospheric oxygen

Trapping of solar energy due to atmospheric carbon dioxide

Cultivation in green houses so as to check pollution

In a box, there are 10 red and 5 black balls. if one ball is picked up randomly, what is the probability that it is red ball?

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1/2

1/3

2/3

4/5

Wisdom teeth are

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Last molars

last premolars

incisors

Canines

Oxygen is our blood is transported by a protein named

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Haemoglobin

Keratin

Collagen

Myoglobin

Flu is caused by a

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Bacteria

Virus

Fungus

None of these

Which of these is a noble metal

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Gold

Calcium

Magnesium

Zinc

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