Important Chemistry MCQs entry test
Q.1: The last digit of a number is generally considered uncertain by ±1 in the absence of qualifying information.
(a) +1 (b) - 1
(c) +/-1 (d) None of these
Q.2: C + O2 → CO2, when 13 g of carbon is treated with 45g oxygen to produce CO2, the___________ is limiting reactant.
(a) Carbon (b) Oxygen (c) both a & b (d) None of these
Q.3: The ______ mass of NaCl is 58.
(a) Molar (b) Molecular (c) both a & b (d) None of these
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Q.4 A process in which a gaseous substance changes into liquid substance is called ______
(a) melting (b) boiling (c) condensation (d) None of these
Q.5: 273ºC =
(a) Zero K (b) 273K (c) 546K (d) None of these
Q.6: A container is filled with CO2 & H2 gas, then which gas is assigned as r1 According to Dalton’s law of partial pressure?
(a) H2 (b) CO2 (c) CO2 + H2 (d) None of these
Q.7: The mass of atmosphere on our body at sea level at 0ºC is ______
(a) 1atm (b) 760 torr (c) 14.7 psi (d) None of these
(a) Increase (b) decrease (c) constant (d) None of these
Q.9: Anode rays are produced from____
(a) Anode (b) cathode (c) both a & b (d) None of these
Q.10: An anion is _____ than its parent atom in atomic size
(a) Smaller (b) larger (c) same (d) none of these
Q.11: How many chemical bonds are present in O2 molecule?
(a) 1 (b) 2 (c) 4 (d) none of these
Q.12: kc is a ratio of ________
(a) reactant/product (b) product/reactant (c) both a & b (d) None of these
Q.13: If a solution has PH=0 then the solution is _______ in nature.
(a) Acidic (b) basic (c) neutral (d) None of these
Q.14: Activation energy is ___ proportional to the rate of reaction.
(a) Directly (b) inversely (c) neutral (d) None of these
Q.15: An element which has ns²-electronic configuration is placed in group of Modern periodic table.
(a) Alkali metals (b) Halogen (c) Alkaline earth metals (d) none of these
Q.16: The atoms which have same No: of valence electrons will show similar ____
(a) Physical properties (b) chemical properties (c) both a & b (d) none of these
Q.17: CH3 − CH2 − OH & CH3 − O − CH3 , these compounds are ______of each other.
(a) Chain isomers (b) Position isomers (c) Functional group isomers (d) N.O.T
(a)oxidation (b) reduction (c) auto oxidation-reduction (d) None of These
Q.19: Elimination Reaction is a reveres of _________ reaction
(a) Addition (b) substitution (c) combustion (d) None of These
Q.20: Galactose and Fructose are ___________ carbohydrates.
(a) Mono-Saccharides (b)Oligo-Saccharides (c)poly-Saccharides (d) N.O.T
Q.21: The food is classified into _______ classes. (a) Three (b) five (c) six (d) N.O.T
Q.22: The closed chain forms of glucose are also represented in hexagonal forms called structure.
(a) Pyranose (b) glucase (c) both a & b (d) N.O.T
Q.23: Fructose is a structural isomer of __________
(a) Galactose (b) Fructose (c) glucose (d) N.O.T
Q.24: On the basis of source the fertilizers have been classified into _____ classes.
(a) Two (b) Five (c) Seven (d) N.O.T
Q.25: Any material which increases the cleaning effect of water is called as_____.
(a) Acid (b) base (c) neutral (d) N.O.T