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Question:

The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation? I. There are no clouds or water vapour in the lower stratosphere. II. There is no vertical wind in the lower stratosphere Which of the statements given above is/ are correct in this context?
  1. I only
  2. II only
  3. Both I and II
  4. Neither I nor II






Q2. Mushrooms are/can be:

  1. A variety of fungus
  2. Fleshy, fruiting bodies of the fungus
  3. Grown in small sheds or plots
  4. All the above
Correct Answer

Q3. Name the salt when dissolved in water give an acidic solution?

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

Q4. Soap consists of:

  1. Sodium salt with fatty acids.
  2. Potassium salt with fatty acids
  3. Both a & b
  4. Sodium and Potassium salt mixed with chemicals
Correct Answer

Q5. What is the SI unit of electric charge?

  1. Volt
  2. Coulomb
  3. Ampere
  4. ohm
Correct Answer

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

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

Q7. Consider the following statement (s) related to the Magnetism I. It is a class of physical phenomena that are mediated by magnetic fields. II. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Which is/are correct statement (s)?

  1. Only I
  2. Only II
  3. Both I & II
  4. Neither I nor II
Correct Answer

Q8. Which of the following is not a radioactive element?

  1. Astatine
  2. Francium
  3. Titanium
  4. Zirconium
Correct Answer

Q9. Which among the following is not an example of carbohydrate?

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

Q10. Which vitamin is needed to prevent Xero-phthalmia?

  1. A
  2. B
  3. C
  4. D
Correct Answer








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