Science Question Bank
for Exam preparation

Q2. Which of the following is the heaviest metal?

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

Q3. A yellow dust appears on the fingers, whenever we touch the middle of a flower. These tiny yellow grains are one of the most precious substances in nature because they contain the secret of plant life. What is this dust called?

1. Pollen
2. Sperm
3. Spore
4. Sporocyst

Q4. Who is known as the father of Modern Chemistry?

1. Kolvey
2. Wholer
3. Leviatiae
4. Pasteur

Q5. Which of the following compound is not used as an alkali?

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

Q6. Which of the following defense of the human body against bacteria?

1. Hemoglobin
2. Phagocytes
3. Red blood cells
4. Blood platelets

Q7. Who was the inventor of radioactivity?

1. Madam Curie
2. Irine Curie
3. Henery Bacqurel
4. Rutherford

Q8. Substances through which electricity cannot flow are called:

1. Conductors
2. Insulators
3. Wires
4. Battery

Q9. Which of the following are electrovalent compounds?

1. Copper Sulphate
2. Calcium Nitrate
3. Magnesium Oxide
4. All of the above

Q10. 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