Science- Practice Set 5
1. Sodium metal should be stored in:
(d) hydrochloric acid
2. A noise level of 100 decibel would correspond to:
(a) just audible sound
(b) ordinary conversation
(c) sound from a noisy street
(d) noise from a machine shop
3. Which of the following metals causes Itai-Itai disease?
4. The best way to dispose plant waste is:
5. Lodised salt is a:
(a) mixture of potassium iodide and common salt
(b) mixture of molecular iodide and common salt
(c) compound formed by combination of potassium iodide and common salt
(d) compound formed by molecular iodine and common salt
6. Angle of friction and angle of repose are:
(a) equal to each other
(b) not equal to each other
(c) proportional to each other
(d) none of the above
7. The temperature of oxy-acetylene flame is around:
8. Which one of the following is not a primary contribute to the greenhouse effect?
(a) Carbon dioxide
(b) Carbon mono oxide
(d) Methane gas
9. Soaps cannot be used in acidic condition because they lose their cleansing effect due to formation of insoluble:
(d) long chain fatty acids
10. Which one of the following material is very hard and very ductile?
(c) Cast iron
11. Where was the world summit on sustainable development (Rio-10) held?
(b) Nova Seotia
12. For which one of the following snakes, the diet mainly composed of other snakes:
(b) Russell's viper
(c) Rattle snake
(d) King cobra
13. Which of the following hormones contains peptide chain?
14. Man and Biosphere Programme is affiliated with:
15. Cell or tissue death within a living body is called:
16. Acid rain is formed due to contribution from the following pair of gases:
(a) Methane and Ozone
(b) Oxygen and Nitrous oxide
(c) Methane and Sulphur dioxide
(d) Nitrogen oxides and Sulphur dioxide
17. Among the following, which one lays eggs and does not produce young ones directly?
18. White lungs disease is prevalent among the workers of:
(a) paper industry
(b) cement industry
(c) cotton industry
(d) pesticide industry
19. Which one of the following is monogamous?
20. The vitamin(s) which is/are generally excreted in urine, is/are:
(d) vitamin-D and K