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Chemistry Test Bank
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Chemistry Test Bank
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25 Questions

1. Iron articles rust because of the formation of
2. During a chloride test, white fumes are produced due to the formation of
3. A vegetable containing sulphur is
4. The incorrect statement among the following is
5. The splitting of the spectral lines in the presence of magnetic filed is called
6. For a reaction, the value of Kc increases with increase in temperature. The ΔH for the reaction would be
7. A process of sudden cooling is known as
8. One mole of ethyl alcohol was treated with one mole of acetic acid at 25°C. Two third of the acid changes into ester at equilibrium. The equilibrium constant for the reaction will be
9. Broken glass that is used in the manufacture of glass is called
10. Radiation is emitted when a hydrogen atom goes from a high energy state to a lower energy state. The wavelength of one line in visible region of atomic spectrum of hydrogen is 6.5 × 10'7 m. Energy difference between the two states is
11. If the equilibrium constant of the reaction of weak acid HA with strong base is 109, then pH of 0.1M NaA is
12. In the compounds of type ECl3, where E = B, P, As or Bi the angles Cl ' E ' Cl for different E are in the order
13. Rare gases are generally chemically inert because they
14. A single covalent bond
15. Consider the gas-phase equilibrium system represented by the equation, 2 H2O (g) → 2 H2 (g) + O2 (g); ΔH = 241.7 kJ. Which of the following changes will decrease the equilibrium amount of H2O?
16. How many ionization energies can carbon have?
17. In a reaction, A + 2B 2 C, if 2.0 moles of A, 3.0 moles of B and 2.0 moles of C are placed in a flask of 2 L capacity and equilibrium concentration of C is 0.5 mole L'1. The value of equilibrium constant Kc of the reaction is
18. Zinc blende structure is obtained when Zn2+ occupies
19. Delocalized molecular orbitals are found in
20. The mass number of a nucleus is
21. For a solution of volatile liquids, the partial vapour pressure of each component in solution is directly proportional to its
22. The energy of an electron in the first Bohr orbit of H-atom is '13.6 eV. The possible energy value(s) of excited state(s) for electron in Bohr orbits of hydrogen is (are)
23. Orthoboric acid on heating to red heat gives a residue of
24. Which of the following transitions involves maximum energy?
25. Milk contains the sugar

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