Chemistry Solved Questions and Answers Set 7

January 24, 2019 entranciology Chemistry Solved Questions and Answers Sets, Solved Questions and Answers Sets For Competitive Exams 0

Q.1:- Good conductors have many loosely bound ?

  1. Protons
  2. Neutrons
  3. Atoms
  4. Electrons

Q.2:- The plant cell will shrink when placed in ?

  1. Water
  2. Hypotonic Solution
  3. Hypertonic Solution
  4. An isotonic solution

Q.3:- Adsorbed acetic acid on activated charcoal is ?

  1. Adsorbate
  2. Adsorber
  3. Absorber
  4. Absorbent

Q.4:- The art of electroplating was given by ?

  1. Edison
  2. Faraday
  3. Thomas Graham
  4. Brugan

Q.5:- The electrochemical cell stops working after some time because ?

  1. Electrode potential of both the electrodes becomes zero
  2. One of electrodes completely vanishes
  3. Electrode potential of both electrodes equalizes
  4. The reaction reverses its direction

Q.6:- Smoke is a colloidal dispersion of ?

  1. Solid in a gas
  2. Liquid in a gas
  3. Gas in a solid
  4. Gas in a gas

Q.7:- The CMC is the concentration at which ?

  1. True solution is formed
  2. Micellization
  3. One molar electrolyte is present per 1000 g of solution
  4. Solute and solution form equilibrium

Q.8:- Na+ ion is isoelectronic with ?

  1. Li+
  2. Mg2+
  3. Ca2+
  4. Ba2+
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Q.9:- The substance that are composed of two or more different element in fixed proportion by mass are called ?

  1. Mixture
  2. Compound
  3. Element
  4. None of these

Q.10:- The MKS system was first introduced by ?

  1. Archimedes
  2. Einstein
  3. Newton
  4. Giorgi

Q.11:- An atom has 7 electrons in its M-shell and contains 18 neutrons in its nucleus. What is its mass number ?

  1. 25
  2. 27
  3. 35
  4. 43

Q.12:- The Alpha particles are ?

  1. High energy electrons
  2. Positively charged Hydrogen ions
  3. High energy X- ray radiations
  4. Double positively charged Helium Nuclei

Q.13:- The oxidation number of Iron in Fe3O4 is ?

  1. +1
  2. +3
  3. 8/3
  4. 2/3

Q.14:- The oxidation number and covalency of Sulphur in S8 is ?

  1. +2, 0
  2. 0, 2
  3. 0, 8
  4. 6, 2

Q.15:- Deviations from ideal behaviour will be more of the gas is subjected to ?

  1. Low temperature and high pressure
  2. High temperature and low pressure
  3. Low temperature
  4. High temperature
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Q.16:- At constant temperature, the product of pressure and volume of a given amount of a gas is constant. This is ?

  1. Gay-Lussac Law
  2. Charles’ Law
  3. Boyle’s Law
  4. Pressure Law

Q.17:- The acid used in eye wash is ?

  1. Oxalic Acid
  2. Nitric Acid
  3. Boric Acid
  4. None of the above

Q.18:- The density of the gas is equal to ?

  1. Np
  2. MP/RT
  3. P/RT
  4. M/V

Q.19:- The substance which decreases the rate of a chemical reaction is called ?

  1. Inhibitor
  2. Poison
  3. Moderator
  4. Promotor

Q.20:- Glucose or fructose is converted into C2H5OH in the presence of ?

  1. Invertase
  2. Diastase
  3. Maltase
  4. Zymase

Q.21:- Non ideal gases approach ideal behaviour ?

  1. High temperature and high pressure
  2. High temperature and low pressure
  3. Low temperature and high pressure
  4. Low temperature and low pressure

Q.22:- Halogens belong to the ?

  1. S-Block
  2. P-Block
  3. F-Block
  4. None of the above
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Q.23:- The properties of elements of Mendeleev’s periodic law were the periodic functions of their ?

  1. Atomic number
  2. Atomic weight
  3. Mass of the atom
  4. Shape of the atom

Q.24:- All the elements in a group in the periodic table have the same ?

  1. Atomic weight
  2. Same number of valence electrons
  3. Atomic number
  4. None of these

Q.25:- Which of the following element has the lowest electron affinity ?

  1. Selenium
  2. Arsenic
  3. Iodine
  4. Argon

 

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