General Science problems
- 1. Isotopes are separated by
Options- A. crystallisation
- B. sublimation
- C. distillation
- D. filtration Discuss
Correct Answer: distillation
- 2. Which of the following rays are more penetrating?
Options- A. Beta rays
- B. Alpha rays
- C. Gamma rays
- D. X-rays Discuss
Correct Answer: Gamma rays
- 3. Which of the following is commonly called a 'polyamide'?
Options- A. Terylene
- B. Nylon
- C. Rayon
- D. Orlon Discuss
Correct Answer: Nylon
- 4. Soap is a mixture of sodium or potassium salts of
Options- A. dicarboxylic acids
- B. monocarboxylic acids
- C. glycerol
- D. tricarboxylic acids Discuss
Correct Answer: monocarboxylic acids
- 5. Deep blue colour is imparted to glass by the presence of
Options- A. cupric oxide
- B. nickel oxide
- C. cobalt oxide
- D. iron oxide Discuss
Correct Answer: cobalt oxide
- 6. Optic fibres are mainly used for which of the following?
Options- A. Musical instruments
- B. Food industry
- C. Weaving
- D. Communication Discuss
Correct Answer: Communication
- 7. Paper is manufactured by
Options- A. Wood and resin
- B. Wood, sodium and bleaching powder
- C. Wood, calcium, hydrogen sulphite and resin
- D. Wood and bleaching powder Discuss
Correct Answer: Wood, calcium, hydrogen sulphite and resin
- 8. Which is/are the important raw material(s) required in cement industry?
Options- A. Gypsum and Clay
- B. Clay
- C. Limestone and Clay
- D. Limestone Discuss
Correct Answer: Limestone and Clay
- 9. In vulcanisation, natural rubber is heated with
Options- A. Carbon
- B. Silicon
- C. Sulphur
- D. Phosphorous Discuss
Correct Answer: Sulphur
- 10. Which of the following is used for removing air bubbles from glass during its manufacture?
Options- A. Arsenous oxide
- B. Potassium carbonate
- C. Soda ash
- D. Feldspar Discuss
Correct Answer: Arsenous oxide
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