51. Glass is made of the mixture of A. Quartz and mica B. Sand and salt C. Sand and silicates D. None of these Answer C. Sand and silicates 52. Which one of the following is used as a filter in rubber tyres? A. Graphite B. Coal C. Coke D. Carbon black Answer D. Carbon
more..41. The ore which is found in abundance in India is A. monazite B. fluorspar C. bauxite D. magnetite Answer: A. monazite 42. The inherited traits of an organism are controlled by A. RNA molecules B. nucleotides C. DNA molecules D. enzymes Answer: C. DNA molecules 43. The heat energy produced when the human body
more..31. Talc contains which one of the following ? A. zinc,calcium,oxygen B. calcium,oxygen,tin C. magnesium,silicon,oxygen D. zinc,tin,sulphur Answer C. magnesium,silicon,oxygen 32. Which one of the following substances is made up of only one type of atoms? A. water B. hydrogen C. milk D. air Answer B. hydrogen 33. Which one of the following is used
more..21. The gas present in the stratosphere which filters out some of the sun’s ultraviolet light and provides an effective shield against radiation damage to living things is A. helium B. ozone C. oxygen D. methane Answer: B. ozone 22. The most commonly used bleaching agent is A. alcohol B. carbon dioxide C. chlorine D.
more..11. The metallurgical process in which a metal is obtained in a fused state is called A. smelting B. roasting C. calcinations D. froth floatation Answer: A. smelting 12. The molecules of which gas have highest speed? A. H2 at -73oC B. CH4 at 300 K C. N2 at 1,027oC D. O2 at 0oC Answer:
more..This is the Part 1 general knowledge questions and answers section on “Chemistry” with explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand. 1. The nucleus of an atom consists of A. electrons and neutrons B. electrons and protons
more..The Tamil Nadu Public Service Commission (TNPSC) is a central agency established in 1923 by the Constitution of India that acts to ensure future capability and sustainability within the Public Service in the Indian state of Tamil Nadu. TNPSC answer key contains the answers for the questions. TNPSC group key answer for Set A, B,
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