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How many days are in a leap year?

1. A 364
2. B 365
3. C 366
4. D 367

Which gas in the atmosphere saves us from the UV rays of the sun?

1. A carbon monoxide
2. B nitrogen
3. C oxygen
4. D ozone

Sir Jagadish Chandra Bose is famous for his contribution in the field of--

1. A All of the previous
2. B Bengali Literature
3. C Biology
4. D Physics

Enzymes and anti-bodies are mainly made of---

1. A Carbohydrate
2. B Fats
3. C Proteins
4. D Vitamins

Which one of the following is an air-pollutant present in the atmosphere?

1. A carbon monoxide
2. B hydrogen
3. C nitrogen
4. D oxygen

Who discoverd Oxygen in 1774?

1. A Galileo
2. B Joseph Priestly
3. C Neil Bohre
4. D Newton

What is the acceptable safe limit of Arsenic per liter of water?

1. A 0.001 mg
2. B 0.01 mg
3. C 0.02 mg
4. D 0.20 mg

One of the following metals, which one pollutes the air of a busy city?

1. A cadmium
2. B chromium
3. C copper
4. D lead

Which one of the following is not a noble gas?

1. A argon
2. B helium
3. C hydrogen
4. D krypton

Which of the following is a device for storing electric charge?

1. A capacitor
2. B compass
3. C counter
4. D cyclotron

The response of plants to light is known as--

1. A Chemotropism
2. B Hydrotropism
3. C Phototropism
4. D Thigmotropism

Numismatics is the study of--

1. A Coins
2. B Numbers
3. C Space
4. D Stamps