Sets
General Science Set 73
30 questions 1. Consider the following pairs:
(I) Ethanol with conc. H₂SO₄ at 443 K – Ethene
(II) Ethanol with sodium – Sodium ethoxide and hydrogen
(III) Methane with chlorine in sunlight – Addition reaction
Which of the pairs given above is/are correctly matched?
2. In the circuit symbol of an electric cell, the long line represents the:
3. In the life cycle of a butterfly, the stage between the larva and the adult is the:
4. The tail of a comet is formed due to:
5. Consider the following pairs:
(I) Orange – Citric acid
(II) Curd – Lactic acid
(III) Tomato – Acetic acid
Which of the pairs given above is/are correctly matched?
6. The copper-T is an example of:
7. In trade winds, the air descends not at the poles but at about:
8. Carbohydrates in rice, potatoes and bread are broken down during digestion to form:
9. Which of the following is correctly matched?
10. A soap bubble of radius 2.0 mm is formed from a solution of surface tension 0.030 N m⁻¹. The excess pressure inside the bubble is:
11. Penicillin is derived from:
12. The electronic configuration of the chloride ion is:
13. The magnitude of the magnetic field at a given point near a straight wire increases when the:
14. The National De-addiction Helpline number is:
15. Natural chlorine consists of ³⁵Cl and ³⁷Cl in the approximate ratio:
16. The black mass formed on heating a mixture of iron filings and sulfur powder is:
17. Plants whose seeds have two cotyledons are called:
18. Danger signal lights are red because red light is:
19. Which of the following is a combustible substance?
20. Plants that grow very tall with hard, thick, brown woody stems and branches starting higher up on the stem are called: