Chemistry Questions - Chemistry question and answers
NEET QUESTION AND ANSWER
No: 1
Q. Who is regarded as father of modern chemistry ?
Ans. Lavoisier
No: 2
Q. Which is not a type of elements ?
Ans. Gases
No: 3
Q. Which acid is present in lemon ?
Ans. Citric acid
No: 4
Q. Rare gases are ?
Ans. tri atomic
No: 5
Q. The term PVC used in the plastic industry stands for ?
Ans. polyvinyl chloride
No: 6
Q. What among following is used to produce artificial rain ?
Ans. silver iodide
No: 7
Q. Oil of vitriol is ?
Ans. sulphuric acid
No: 8
Q. Which is used in preparation of dynamite ?
Ans. glycerol
No: 9
Q. What is Calcium sulphate ?
Ans. gypsum salt
No: 10
Q. Bleaching action of chlorine is by
Ans. decomposition
No: 11
Q. Which metal is heaviest ?
Ans. osmium
No: 12
Q. What is a mixture of potassium nitrate powdered charcoal and sulphur called?
Ans. gun powder
No: 13
Q. Nail polish remover contains ?
Ans. acetone
No: 14
Q. What nucleus of atom contains ?
Ans. protons and neutrons
No: 15
Q. The isotope atoms differ in ?
Ans. number of neutrons
No: 16
Q. Human bone does not contain ?
Ans. oxygen
No: 17
Q. Homo nuclear molecules contain ?
Ans. covalent bond
No: 18
Q. Air contains maximum amount of ?
Ans. nitrogen
No: 19
Q. Washing soda is ?
Ans. sodiun carbonate
No: 20
Q. Natural rubber is a polymer derived from ?
Ans. isoprene
No: 21
Q. Who proposed first atomic theory ?
Ans. John Dalton
No: 22
Q. pH of blood is ?
Ans. 7.4
No: 23
Q. pH of water is ?
Ans. 7
No: 24
Q. Which have the maximum density ?
Ans. Water
No: 25
Q. Which one of the following gas is readily soluble in water at room temperature ?
Ans. carbon dioxide
No: 26
Q. Which is also called Stranger Gas ?
Ans. Xenon
No: 27
Q. The chemical used as a fixer in photography is ?
Ans. ammonium sulphate
No: 28
Q. Water drops are spherical because of ?
Ans. surface tension
No: 29
Q. Aspirin is ?
Ans. acetyl salicylic acid
No: 30
Q. The oxide of Nitrogen used in medicine as anaesthetic is ?
Ans. Nitrogen pentoxide
No: 31
Q. Which one of the following metals does not react with water to produce Hydrogen ?
Ans. Cadmium
No: 32
Q. The most electronegative element among the following is ?
Ans. fluorine
No: 33
Q. Atomic number is equal to ?
Ans. Number of protons
No: 34
Q. Which of the primary component of natural gas ?
Ans. Methane
No: 35
Q. The metal used to recover copper from a solution of copper sulphate is ?
Ans. Fe
No: 36
Q. Which gas is used in fire extinguishers ?
Ans. Carbon dioxide
No: 37
Q. The metallurgical process in which a metal is obtained in a fused state is called ?
Ans. smelting
No: 38
Q. Which of the following is produced during the formation of photochemical smog ?
Ans. Ozone
No: 39
Q. Which of the following gas is used in cigarette lighters ?
Ans. Butane
No: 40
Q. Biogas majorly contains ?
Ans. Methane
No: 41
Q. The nuclear particles which are assumed to hold the nucleons together are ?
Ans. mesons
No: 42
Q. The metal that is used as a catalyst in the hydrogenation of oils is ?
Ans. Ni
No: 43
Q. The most abundant element in the earth's crust is ?
Ans. Oxygen
No: 44
Q. The most abundant rare gas in the atmosphere is ?
Ans. Ar
No: 45
Q. The ore which is found in abundance in India is
Ans. monazite
No: 46
Q. The luster of a metal is due to ?
Ans. presence of free electrons
No: 47
Q. The most malleable metal is ?
Ans. gold
No: 48
Q. Iodine can be separated from a mixture of Iodine and Potassium Chloride by ?
Ans. Sublimation
No: 49
Q. The material which can be deformed permanently by heat and pressure is called a
Ans. thermoset
No: 50
Q. Mass number of a nucleus is ?
Ans. the sum of the number of protons and neutrons present in the nucleus
No: 51
Q. Conduction band electrons have more mobility than holes because they are ?
Ans. experience collision less frequently
No: 52
Q. Due to rusting the weight of iron ?
Ans. Increases
No: 53
Q. Which gas is used to manufacture vanaspati from vegetable oil is?
Ans. hydrogen
No: 54
Q. The most electropositive elements among the following is ?
Ans. Cs
No: 55
Q. The Chemical Symbol of Sodium is ?
Ans. Na
No: 56
Q. Which one is an organic Acid ?
Ans. Citric
No: 57
Q. The gas used for artificial ripening of green fruit is ?
Ans. ethylene
No: 58
Q. Air is a ?
Ans. mixture
No: 59
Q. Chemical used in photography is ?
Ans. sodium thiosulphate
No: 60
Q. A catalyst is a substance which ?
Ans. hastens the at: 61
Q. The high reactivity of fluorine is due to ?
A. its high electro negativity
No: 62
Q. The main chemical constituent of clay is ?
A. aluminium silicate
No: 63
Q. Which element found in all organic compounds ?
A. carbon
No: 64
Q. Alloys made with mercury as one metal are called ?
A. amalgams
No: 65
Q. All noble gases are ?
A. colourless and odourless
No: 66
Q. What is the hardest form of carbon ?
A. diamond
No: 67
Q. What is hottest part of the gas flame is called ?
A. non - luminous zone
No: 68
Q. Atomic number of an element gives ?
A. the number of electrons in its atom
No: 69
Q. Faraday's Law is associated with ?
A. Electrolysis
No: 70
Q. Enzymes are ?
A. Proteins
No: 71
Q. Elements that show the properties of both metals and non metals are called ?
A. metalloids
No: 72
Q. Ozone is ?
A. Diamagnetic
No: 73
Q. Petroleum is found in ?
A. Sedimentary rocks
No: 74
Q. Permanent hardness of water is due to the presence of ?
A. Calcium sulphate
No: 75
Q. What is laughing gas ?
A. nitrous oxide
No: 76
Q. The acid generally stored in batteries is ?
A. Sulphuric Acid
No: 77
Q. Sugars are converted in the liver into?
A. Glycogen
No: 78
Q. The ejection of electrons when a metal surface is irradiated is known as ?
A. Photoelectric effect
No: 79
Q. The cyclotron is used to ?
A. accelerating particles
No: 80
Q. The substance that contains the maximum amount of nitrogen is ?
A. Urea
No: 81
Q. Which of the following gases is the most toxic ?
A. Carbon monoxide
No: 82
Q. Which of the following elements behave chemically both as a metal and a non metal ?
A. Boron
No: 83
Q. What is the chemical name of table salt ?
A. Sodium chloride
No: 84
Q. Why is phosphorus kept under water ?
A. to save it from catching fire when exposed to dry air
No: 85
Q. What is extracted from Bauxite ?
A. Aluminium
No: 86
Q. Brass is an alloy of ?
A. Copper and Zinc
No: 87
Q. Contact lenses are made from ?
A. Polyvinyl chloride
No: 88
Q. Which gas is filled in refrigerators ?
A. Chlorofluorocarbon
No: 89
Q. The single acid which dissolves gold is ?
A. Aqua regia
No: 90
Q. How many different oxides are formed by nitrogen ?
A. 2
No: 91
Q. The major component used in preparation of different types of glasses is ?
A. Silica
No: 92
Q. Acid rain is due to air pollution by ?
A. Nitrous oxide and Sulphur dioxide
No: 93
Q. Acids taste ?
A. Sour
No: 94
Q. What is metallurgy ?
A. process of extracting metal in pure form from its ore
No: 95
Q. What is used to avoid melting of ice ?
A. Gelatine
No: 96
Q. Which have maximum number of isotopes ?
A. Polonium
No: 97
Q. The aqueous solution of which acids is called Vinegar ?
A. Acetic acid
No: 98
Q. The number of moles of solute present in 1 kg of a solvent is called its ?
A. molality
No: 99
Q. The most electronegative element among the following is ?
A. fluorine
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