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Solved MCQs Question Answers Objective Type Question Answers




Q.1: By combining n atmic orbitals no. of hybrid orbitals will be--------- ?
  1. 2n
  2. n
  3. 3n
  4. impossible to predict
B
Q.2: The relative attraction of the nucleus for the electrons in a chemical bond is called --------- ?
  1. Ionization energy
  2. Electron affinity
  3. Electro negativity
  4. None of the above
C
Q.3: Hydrogen resembles with carbon because of having---------- ?
  1. Same number of electrons in the valence shell
  2. Similar physical state
  3. Remarkable reducing properties
  4. Homovalent (show same valency)
C
Q.4: An element having low value of ionization energy and low value of electron affinity is likely to belong to----- ?
  1. Group IA
  2. Group IB
  3. Group VIIA
  4. Group VIII
A
Q.5: The longest period in the modern periodic table is---------- ?
  1. 6th
  2. 7th
  3. 2nd and 3rd both
  4. 5th
A
Q.6: Which of the following option is incorrect about gases ?
  1. All molecules move with same speed
  2. All molecules behave independently
  3. PV / RT = n
  4. All gases cannot be liquefied through Linds Method
A
Q.7: Which of the following have their outer most shell complete in atomic form ?
  1. Noble gases
  2. Alkali metals
  3. Coinage metals
  4. Gun metals
A
Q.8: The partial pressure exerted by the water vapours is called-------- ?
  1. Surface tension
  2. Aqueous tension
  3. Vapour pressure
  4. Hydraulic pressure
B
Q.9: Which one of the following has polar covalent bond ?
  1. HF
  2. CH4
  3. H2
  4. N2
A
Q.10: Reaction which proceeds in both directions is called-------- ?
  1. reversible
  2. irreversible
  3. spontaneous
  4. non-spontaneous
A
Q.11: The pH of 10-3 mol dm-3 of an aqueous solution of H2SO4 is----------- ?
  1. 3
  2. 2.7
  3. 2
  4. 1.5
B
Q.12: An element has electronic conviguration 1s2 2s2 2p2. It belongs to------- ?
  1. Group II-A
  2. Group IV-A
  3. Group VII-A
  4. Group VI-A
B
Q.13: Negative log of mular concentration of H+ ions is called---------- ?
  1. pH
  2. pOH
  3. pKa
  4. pKw
A
Q.14: What is the relative rate of effusion of CO and CO2 ?
  1. CO is 1.25 times faster than CO2
  2. CO is 3.75 times faster than CO2
  3. CO is 1.25 times faster than CO
  4. Both diffuse at the same rate
A
Q.15: Each catalyst has----- ?
  1. Specificity
  2. Special structure
  3. Its own Ea
  4. all of above
D
Q.16: Which state of matter has the lowest density ?
  1. Gas
  2. Liquid
  3. Solid
  4. Plasma
A
Q.17: Which of the following type of reaction is 3rd order reaction-------- ?
  1. 2N2O5 = 2N2O4 + O3
  2. NO + O3 ? NO2 + O2
  3. 2FeCl3 + 6KI ? 2FeI2 + 6KCl + I2
  4. None of these
C
Q.18: Which of the p-block elements are not representative elements ?
  1. Alkali metals (I-A)
  2. Group-14 elements (IV-A)
  3. Group-18 elements (VIII-A)
  4. Halogens (VII-A)
C
Q.19: When a graph is plotted between 1/T on X-axis and log k on y-axis a straight line is obtained with a negative slope which has two end in-------- ?
  1. I and II quadrant
  2. II and III quadrant
  3. III and IV quadrant
  4. II and IV quadrant
D
Q.20: Best position of hydrogen in the periodic table is above I.A Group which is mainly due to------- ?
  1. Both are electropositive
  2. Similar outer most shell electronic configuration
  3. Both form ionic compounds
  4. All
D
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