Q1. Piped Natural Gas (PNG) is used for
(a) Mining
(b) Welding
(c) Anaesthesia
(d) Cooking
Q2. Heavy water is so called because it contains
(a) Heavy isotope of hydrogen
(b) Heavy isotope of oxygen
(c) Mole number of hydrogen atoms
(d) Mole number of oxygen atoms
Q3. Glass is soluble in
(a) H₂SO₄
(b) HCIO₄
(c) HNO₃
(d) HF
Q4. Who was the father of Biology?
(a) Aristotle
(b) Antoine Lavoisier
(c) Eratosthenes
(d) none of these
Q5. Nitrogen is an essential constituent of all:
(a) Fats
(b) Proteins
(c) Vitamins
(d) Carbohydrates
Q6. Ethanol containing 5% water is known as:
(a) Dilute alcohol
(b) Power alcohol
(c) Rectified spirit
(d) Absolute alcohol
Q7. Gypsum is used for improvement of:
(a) Alkaline soils
(b) Saline soils
(c) Podsols
(d) Acidic soils
Q8. Which among the following is used as a catalyst in the production of high octane fuels?
(a) HNO₃
(b) H₂SO₄
(c) HCI
(d) HF
Q9. Who was the father of chemistry?
(a) Antoine Lavoisier
(b) Aristotle
(c) Eratosthenes
(d) none of these
Q10. The depletion of Ozone layer is mainly due to
(a) Volcanic eruptions
(b) Aviation fuels
(c) Radioactive rays
(d) Chlorofluorocarbons
Q11. Typhoid fever is caused by-
(a) virus
(b) bacteria
(c) fungus
(d) allergy
Q12. When a lead storage battery is discharged,
(a) SO₂ is evolved
(b) Lead sulphate is consumed
(c) Lead is formed
(d) Sulphuric acid is consumed
Q13. Radioactive elements emit:
(a) Radiowaves
(b) Infrared waves
(c) Ultraviolet waves
(d) α, β, and γ radiations
Q14. Bayer’s reagent is
(a) Alkaline potassium permanganate
(b) Acidified potassium permanganate
(c) Hydrogen peroxide
(d) Bromine water
Q15. Which of the following metals is used in Space Crafts to withstand high temperatures?
(a) Fe
(b) Ti
(c) Ni
(d) Pb
