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2nd year chemistry MCQs with answers
Table of Contents
Test Type: MCQs Test Marks=20
2nd year chemistry solved mcqs _ Unit No 1
1- Circle the correct one. (20×1=20)
i. The basis of the modern periodic table is:
(A) Electron affinity (B) Atomic mass (C) Ionization Potential (D) Atomic number
ii. Elements of Group IIA are called?
(A) Alkali metals (B) Alkaline earth metals (C) Coinage metals (D) Halogens
iii. In modern periodic table 6th period contains elements?
(A) 8 (B) 18 (C) 10 (D) 32
iv. Which of the following are alkaline earth metals?
(A) Be, Mg, Ca (B) Li, Na, K (C) Fe, CO, Ni (D) B, Al, Ga
v. Which one is an incomplete period?
(A) 4th (B) 5th (C) 6th (D) 7th
vi. Non-metals are present in which block of the periodic table?
(A) s-block (B) p-block (C) d-block (D) f- block
vii. Which order is the correct one for the size of atoms?
(A) Mg >Sr (B) Ba > Mg (C) Lu >Ce (D) Cl > I
viii. Which of the following element has the lowest- ionization energy?
(A) Beryllium (B) Boron (C) Carbon (D) Oxygen
ix. Which element has the lowest melting point:
(A) Beryllium (B) Magnesium (C) Calcium (D) Barium
x. Which of the following has the highest M.P?
(A) Aluminium (B) Silicon (C) Phosphorus (D) Sulphur
xi. Which of the following has the highest hydration energy?
(A) Li+ (B) Na+ (C) K+ (D) Mg++
xii. Which ion will have maximum heat of hydration?
(A) Na+ (B) Cs+1 (C) Ba+2 (D) Mg+2
xiii. Which one is not a periodic property:
(A) Ionization energy (B) Density (C) Atomic Radii (D) Hydration energy
xiv. Which is the correct statement.
(A) C l¯is smaller than Cl atom (B) C l¯ (ion) and Cl (atom) are equal in size.
(C) Na+ is smaller than Na atom (D) Na+ is larger than Na tom
xv. Hydrogen resembles in properties with groups:
(A) I-A, V-A, VII-A elements (B) I-A, IV-A, VII-A elements (C) II-A, III-A, V-A elements (D) I-A, II-A, elements
xvi. Which statement is correct?
(A) Hydrogen resembles properties with I-A, IV-Aelements
(B) Hydrogen resembles in properties with III-A,IV-A, and V- A elements.
(C) Hydrogen resembles in properties with II-A, IV-A, and VI- A elements.
(D) Hydrogen resembles in properties with II-A, III-A, and VII-A elements.
xvii. Mark the correct statement:
(A) The ionization energy of calcium is lower than that of barium
(B) The ionization energy of calcium is lower than that of magnesium.
(C) The ionization energy of calcium is higher than that of beryllium.
(D) The ionization energy of calcium is lower than that of strontium.
xviii. Mark the correct statement:
(A) Electron affinity is a measure of the energy required to remove the electron.
(B) Electron affinity is a measure of the energy released by adding an electron.
(C) Electron affinity is a measure of energy required to excite an electron.
(D) Electron affinity is measure of energy released by removing an electron.
xix. Mark the correct statement:
(A) Metallic character increases down the group. (B) Metallic character increases along a period.
(C) Metallic character decreases along a period. (D) Metallic character remains the same down the group
xx. Mark the correct statement:
(A) Covalent character of metal halides increase from left to right in a period.
(B) Boiling points of group IV-A hydrides decrease down the group.
(C) Ionic character of hydrides increases from left to right in a period.
(D) The basicity of group II-A oxides decreases on descending the group.
MCQs Ans Key
Q:1 (D) Q:2 (B) Q:3 (D) Q:4 (A) Q:5 (D) Q:6 (B) Q:7 (B) Q:8 (B) Q:9 (B) Q:10 (B) Q:11 (D) Q:12 (D) Q:13 (B) Q:14 (C) Q:15 (B) Q:16 (A) Q:17 (B) Q:18 (B) Q:19 (A) Q:20 (A)