General Science Questions and Answers
General Knowledge General Science Questions with Answers enhance scientific understanding in physics, chemistry, and biology. Useful for SSC, RRB, and NDA exams, these questions strengthen your general science foundation
General Science
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124 questions
21. Among the various allotropes of carbon,
- coke is the hardest, graphite is the softest
- diamond is the hardest, coke is the softest
- diamond is the hardest, graphite is the softest
- diamond is the hardest, lamp black is the softest
22. The group of metals Fe, Co, Ni may best called as
- transition metals
- main group metals
- alkali metals
- rare metals
24. The chemical (ethyl merceptan) added to the otherwise odourless LPG cooking gas for imparting a detectable smell to the gas is a compound of
- bromine
- fluorine
- chlorine
- sulphur
26. Non stick cooking utensils are coated with
- Teflon
- PVC
- black paint
- polystyrene
28. Carbon, diamond and graphite are together called
- allotropes
- isomers
- isomorphs
- isotopes
30. Permanent hardness of water may be removed by the addition of
- sodium carbonate
- alum
- potassium permanganate
- lime