Chemistry Questions and Answers
General Knowledge Chemistry Questions with Answers cover chemical reactions, elements, and compounds. These are important in SSC, RRB, and B.Ed exams to develop basic scientific understanding
Chemistry
Showing 10 of
71 questions
21. The ore which is found in abundance in India is
- monazite
- fluorspar
- bauxite
- magnetite
22. The inherited traits of an organism are controlled by
- RNA molecules
- nucleotides
- DNA molecules
- enzymes
23. The heat energy produced when the human body metabolises 1 gram of fat is
- 30 KJ
- 1 KJ
- 39 KJ
- 29 KJ
24. What are the number of moles of CO2 which contains 16 g of oxygen?
- 0.5 mole
- 0.2 mole
- 0.4 mole
- 0.25 mole
25. The main use of salt in the diet is to
- make the taste of food better
- produce in small amounts the hydrochloric acid required for the digestion of food
- ease the process of cooking
- increase the solubility of food particles in water
26. The monomer of polythene is
- vinyl chloride
- ethylene
- ethyl alcohol
- None of the above
27. The luster of a metal is due to
- its high density
- its high polishing
- its chemical inertness
- presence of free electrons
28. The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is
- 1.568 x 103
- 6.023 x 1019
- 4.84 x 1017
- 6.023 x 1023
30. The oil used in the froth floatation process is
- coconut oil
- olive oil
- kerosene oil
- pine oil