Science Question Bank
for Exam preparation

Science- Q2. Who among the following Scientist is associated with the invention of the refrigerator?

1. G. Brousa
2. Harison & Kaitlin
3. William Gas Cogin
4. Einstein

Science- Q3. Consider the following statement (s) about frequency I. It is describes as the number of waves that pass a fixed place in a given amount of time. II. It is measured in the hertz unit, named in honour of the 19th-century German physicist Heinrich Rudolf Hertz. Which is/are correct statement (s)?

1. Only I
2. Only II
3. Both I & II
4. All of the above

Science- Q4. Which one of the following is not correctly matched?

1. Tuberculosis: Lungs
2. Filaria: Lymph nodes
3. Encephalitis: Heart
4. Leukaemia: Blood cells

Science- Q5. Name the acid that is secreted in the stomach?

1. HCl
2. H2S04
3. H2C03
4. HNO3

Science- Q6. Which of the following compound is not used as an alkali?

1. Sodium hydroxide
2. Potassium hydroxide
3. Carbon hydroxide
4. Nitrogen hydroxide

Science- Q7. Mention the source of Liver, milk, egg yolk, fish liver oil?

1. Vitamin A
2. Vitamin B2
3. Vitamin D
4. Vitamin C

Science- Q8. The sky appears black from the moon because of:

1. Lack of atmosphere
2. Lack of cloud
3. Lack of oxygen and CO2
4. None of these

Science- Q9. What are the two major processes of evolution of species?

1. Migration and adoptation
2. Process of selection
3. Process of isolation
4. Both B & C

Science- Q10. Which of the following is the heaviest metal?

1. osmium
2. mercury
3. iron
4. nickel