Kerala PSC - Important and Expected General Science Questions - 70

1. Chlorine gas can be prepared by
[a] Bosch Process
[b] Haber Process
[c] Ostwald Process
[d] Deacon’s Process

---

2. The isotope of hydrogen that does not contain any neutrons in its nucleus is
[a] Protium
[b] Deuterium
[c] Tritium
[d] Both [b] & [c]

---

3. The nonmetal which exists as liquid in room temperature is
[a] Iodine
[b] Bromine
[c] Flourine
[d] Mercury

---

4. Lord Rayleigh and Sir William Ramsay were awarded Nobel Prizes in 1904 for their discovery of
[a] Radioactivity
[b] Super conductivity
[c] Noble gases
[d] Transuranic elements

---

5. Baeyers’s reagent is
[a] Dilute alkaline solution of KMnO₄
[b] Alkaline Solution of K₂(Hgl₄)
[c] Copper Sulphate Solution
[d] Solution of Mercuric and Mercurous Nitrate

---

6. Brass is an alloy of
[a] Aluminium & Zinc
[b] Copper & Aluminium
[c] Nickel & Zinc
[d] Copper & Zinc

---

7. Dry ice is
[a] Solid Sulphur Dioxide
[b] Solid Ammonia
[c] Solid Carbon Dioxide
[d] Solid Hydrogen Sulphide

---

8. Silver Nitrate is commonly known as
[a] Lunar Caustic
[b] Caustic Soda
[c] Blue Vitriol
[d] White Vitriol

---

9. An extremely toxic and deadly compound responsible for the Bhopal gas tragedy is
[a] Benzene Hexachloride 
[b] DDT
[c] Methyl isocyanate
[d] Methyl alcohol

---

10. Nitrogen present in an organic compound can be estimated by
[a] Dumas Method
[b] Kjeldahl’s Method
[c] Carvis Method
[d] both [a] & [b]

---

11. Molecular formula of benzene is
[a] C₆H₁₄ 
[b] C₆H₁₂
[c] C₆H₁₀ 
[d] C₆H₆

---

12. Different components of Crude oil are separated in petroleum industry by
[a]Chromatography
[b] Fractional distillation
[c] Crystallization
[d] Differential extraction

---

13. Thermodynamically stable allotropic form of carbon is
[a] Diamond
[b] Graphite
[c] Fullerene
[d] Coke

---

14. Marsh gas is
[a] Methane
[b] Ethane
[c] Propane 
[d] Butane

---

15. The substance added to LPG to detect leakage is
[a]Ethanol
[b] Ethyl Mercaptan
[c] Ethyl amine
[d] Chloroethane

---

---