NEET MCQ for Chemistry 15

NEET MCQ for Chemistry 15

Q.1.The mass number of a nucleus is
A) Always less than its atomic number
B) The sum of the number of protons and neutrons present in the nucleus
C) Always more than the atomic weight
D) A fraction

Q.2.Which one of the following metals does not form amalgams?
A) Zinc
B) Copper
C) Magnesium
D) Iron

Q.3.What is the pKW at 298 k?
A) 7
B) 1
C) 14 
D) 0

Q.4.What is the reverse process of Neutralization?
A) Formation
B) Reaction
C) Hydrolysis
D) Splitting

Q.5.Which of the following is not a unit of length?
A) Angstrom
B) Micron
C) Radian 
D) Light Year

Q.6.The ratio of the water molecule in plaster of Paris and gypsum is
A) 3:1
B) 1:3
C) 1:4
D) 4:3

Q.7.The non-metal which is liquid at room temperature is
A) Carbon
B) Iodine
C) Bromine
D) Mercury

Q.8.The pair in which phosphorous atoms have a formal oxidation state of + 3 is
A) Pyrophosphorous and pyrophosphoric acids
B) Orthophosphorous and pyrophosphorous acids
C) Pyrophosphorous and hypophosphoric acids
D) Orthophosphorous and hypophosphoric acids

Q.9.The hybridization of carbocation is_______
A) Sp
B) Sp2
C) Sp3
D) Sp3d

Q.10.When milk of magnesia reacts with acetic acid it produces
A) Basic Salts
B) Neutral Salt 
C) Acidic Salts
D) Complex Salt

Q.11.What is “milk of magnesia” chemically?
A) Magnesium carbonate
B) Sodium bicarbonate
C) Calcium hydroxide
D) Magnesium hydroxide 

Q.12.The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is
A) 5x/36
B) 5x
C) 7.2
D) x/6

Q.13.Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?
A) Lithium and mercury
B) Lithium and osmium
C) Aluminium and osmium
D) Aluminium and mercury

Q.14.Which one of the following is used as an explosive?
A) Phosphorus trichloride
B) Mercuric oxide
C) Graphite
D) Nitroglycerine

Q.15.Which acid is present in lemon?
A) Marlic acid
B) Citric acid
C) Lactic acid
D) Tartaric acid

Q.16.Which have the maximum density?
A) Water
B) Benzene
C) Ice
D) Chloroform

Q.17.The material which can be deformed permanently by heat and pressure is called a
A) Thermoset
B) Thermoplastic
C) Chemical compound
D) Copolymer

Q.18.Why is phosphorus kept under water?
A) To make it wet
B) To make it durable
C) Water forms a protective coating on it
D) To save it from catching fire when exposed to dry air

Q.19.What do non metal atoms lose to form negatively charged ions?
A) Protons
B) Neutrons
C) Electrons
D) Protons and Neutrons

Q.20.Reactive metals are extracted by_______
A) Carbon
B) Carbon monoxide
C) Emulsion
D) Electrolysis

Q.21.Bring out the incorrect usage
A) Heavy water – Moderator
B) DDT – Insecticide
C) Methyl Alcohol – Beverage
D) Liquid Ammonia – Refrigerant

Q.22.Human bone does not contain
A) Calcium
B) Carbon
C) Oxygen
D) Phosphorus

Q.23.The colors in the fine cut diamond are because of which among the following?
A) Variance in transparency of diamond
B) Variance in index of refraction
C) Presence of Impurities
D) Existence of definite planer layers

Q.24.Lysergic acid diethylamide (LSD) is a drug used as a
A) Steroid
B) Sedative
C) Analgesic
D) Hallucinogen

Q.25.Which among the following protein is responsible for maintenance of osmotic pressure?
A) Beta macroglobulin
B) Gamma globulin
C) Immunoglobulin
D) Albumin

NEET MCQ Chemistry-1
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