NEET MCQ for Chemistry 21
Q.1.Which of the following is not a greenhouse gas?
C) Carbon dioxide
D) All of above
Q.2.What is the oxidation state of oxygen in hydrogen peroxide?
Q.3.Lithium aluminum hydride. LiAlH4 is
A) A reducing agent
B) A oxidizing agent
C) Used for reduction of carbonyl compound
D) Both A) and C)
Q.4.Calcium Magnesium Silicate is commonly called as
C) Baking Soda
D) Washing Soda
Q.5.Two atoms are said to be isobars if
A) They have same atomic number but different mass number.
B) They have same number of electrons but different number of neutrons
C) They have same number of neutrons but different number of electrons.
D) Sum of the number of protons and neutrons is same but the number of protons is different
Q.6.A student placed an iron nail in copper sulphate solution. He observed the reddish brown coating on the iron nail which is
B) Hard and flading
C) Smooth and shining
D) Rough and granular
Q.7.Which one of the following molecules is expected to exhibit diamagnetic behaviour
Q.8.The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be 1000 ppb, 40 ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of
Q.9.The main buffer system of the human blood is
A) H2CO3 – HCO3
B) H2CO3 – CO32-
C) CH3COOH – CH3COO–
D) NH2CONH2 – NH2CONH+
Q.10.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.11.Which acid is present in lemon?
A) Marlic acid
B) Citric acid
C) Lactic acid
D) Tartaric acid
Q.12.Which is used in preparation of dynamite?
B) Ethyl alcohol
C) Methyl alcohol
Q.13.With reference to the uses of washing soda.
1. Washing soda is used in glass, paper and soap industries.
2. It is not used in the manufacture of Borax.
3. It can be used as a cleaning agent.
4. It is unable for removing permanent hardness of water.
Choose the correct options:
A) 1,2 and 3
B) 2 and 3
C) 3 Only
D) 1 and 3 Only
Q.14.The monomer of polythene is
A) Vinyl chloride
C) Ethyl alcohol
D) None of the above
Q.15.Which one of the following is used as an explosive?
A) Phosphorus trichloride
B) Mercuric oxide
Q.16.Unreactive non metals are called
B) Alkali metals
D) Noble gases
Q.17.What is metallurgy?
A) Process of extracting metal in pure form from its ore.
B) Process of creating alloys of metals.
C) Process of making metals live long.
D) None of the above.
Q.18.The metal that is used as a catalyst in the hydrogenation of oils is?
Q.19.When a piece of quicklime is dipped in water, it gives bubbles. This bubbling is due to which of the following?
B) Carbon Dioxide
C) Water Vapour
Q.20.Which among the following gas has lowest auto-ignition temperature?
D) Carbon Di Sulphide
Q.21.Which among the following is an organic mineral?
Q.22.Which among the following provides the centripetal force to an electron circulating around the nucleus?
A) Electrostatic forces of repulsion
B) Electrostatic force of attraction
C) Speed of the electron
D) Nuclear charge
Q.23.The Chemical formula of Graphite is______?
Q.24.How many parts are of other metals in a 17 carat Gold?
Q.25.Which among the following is an ionic solid?
B) Dry ice
C) Table salt
D) All are ionic solids