Science Question Bank
for Exam preparation

Q2. Select the correct term related to the phrase- ‘The entire complement of species of organisms, plants and animals, found within a given region’:

1. Community
2. Biotope
3. Biota
4. Biostasy

Q3. What is the work done in moving a unit positive charge from infinity to that point in electric field called?

1. Electric potential
2. Potential difference
3. Electric current
4. Electric circuits

Q4. The cycling at various scales, of minerals and compounds through the ecosystem is:

1. Aboitic (Non-living) Components
2. Biogeochemical Cycles
3. Carbon & Oxygen Cycles
4. Nitrogen Cycles

Q5. Name the salt when dissolved in water give an acidic solution?

1. Potassium Chloride
2. Ammonium Chloride
3. Sodium Carbonate
4. Sodium Acetate

Q6. The mass number of an atom is:

1. Number of nucleons in the nucleus
2. Number of protons in the nucleus
3. Number of neutrons in the nucleus
4. None of these

Q7. Which among the following is not an example of carbohydrate?

1. Maltose
2. Fructose
3. Glycogen
4. Glycine

Q8. Bleaching powder is formed by treating chlorine with.......

1. Calcium Hydroxide
2. Potassium Hydrogen carbonate
3. Magnesium Hydroxide
4. None of the above

Q9. The acidic nature and basic nature of some salt solutions can be explained on the basis of:

1. Splitting of a salt compound
2. Hydrolysis of salts
3. Both A and B
4. Only B

Q10. The atomic number of four elements P, Q, R, S are 6, 8, 10 and 12 respectively. The two elements which can react to form ionic compounds are:

1. P and S
2. Q and R
3. P and R
4. Q and S