8. An example of a chelating ligand is
(a) NO2- (b) Chloro (c) Bromo (d) en
9. The most penetrating radiations are
(a) α-rays (b) β- rays (c)γ-rays (d) alla are equally penetrating
10. In the bragg’s equation for diffraction of X-rays ,’n’ represents
(a) number of moles (b) avagadro number (c) quantum number (d) order of reflection
11. In which of the following process, the process is always non-feasible?
(a)∆H>0,∆S>0 (b)∆H<0,∆S>0 (c)∆H>0,∆S<0 (d) ∆H<0,∆S<0
12. If the latent heat of fusion of ice is 80 cal/g, then the increase in entropy when one mole of ice at 0°C melts to water will be
(a) 5.275 cal/mol (b) 5.275cal/g (c) 0.293 cal/mol (d) 0.293 cal/g
13. In haber’s process , the maximum yield of ammonia will be obtained when
(a) low pressure and high temperature (b) low pressure and low temperature
(c) high temperature and high pressure (d) high pressure and low temperature
14. Le-chatelier principle applies
(a) Only to gaseous reactions (b) to all chemical reactions
(c) To all liquid reactions (d) to all equilibrium reactions
15. If the half life of a radioactive substance is 5years, then the total amount of substance left after 15 years , when the initial amount is 64g, is
(a)16 g (b) 2 g (c) 32 g (d) 8 g
16. The catalyst used in the manufacture of nitric acid in Ostwald’s process is
(a) Pt (b) V2O5 (c) Cucl2 (d) Fe
17. An example for solid foam is
(a) Soap lather (b)Cork (c) cloud (d)smoke
18. The migration of colloidal particles under the influence of an electric field is known as
(a) Tyndall effect (b) electro-osmosis (c) Brownian movement (d) electrophoresis
19. The numeric value of Kw for 1M of Hcl is
(a) 0 (b) 7 (c) 14 (d)1×10-14
20. Ethanol reacts with iodine and potassium hydroxide to form
(a) CH3I (b) CHI3 (c) CH3COCH3 (d) CH3OH
Save your answers. Check here for the final part in this Set.
No comments:
Post a Comment