1. The blue complex formed on addition of conc. NH4OH
solution to a Cu2+ salt solution has the s tructure?
(a) [Cu(NH4)4]2+ (b) [Cu(NH3)2]2+
(c) [Cu(NH3)4]2+ (d) [Cu(NH4)2]2+
2. Sodium thiosulphate is used in photography to
(a) Reduce silver bromide to silver
(b) Convert metallic silver to silver salt
(c) Remove and decompose AgBr as a soluble silver
thiosulphate complex
(d) Remove reduce silver
3. The black compound formed during the reaction between
sodium thiosulphate and silver nitrate is
(a) Silver thiosulphate (Ag2S2O3)
(b) Silver sulphide (Ag2S)
(c) Sliver sulphate (Ag2SO4)
(d) Silver sulphite (Ag2SO3)
4. Parke’s process is used
(a) To extract Ag using NaCN
(b) To extract Cu using CuFeS2
(c) To extract Ag from argentiferrous lead
(d) To extract Ag by forming amalgam
5. The lanthanides contraction is responsible for the fact that
(a) Zr and Y have about the same radius
(b) Zr and Nb have similar oxidation state
(c) Zr and Hf have about the same radius
(d) Zr and Zn have the same oxidation state
6. Which of the following element is responsible for oxidation of
water of O2 in biological process?
(a) Fe (b) Mn
(c) Cu (d) Mo
7. In order to prepare one litre normal solution of KMNO4, how
many grams of KMNO4 are required if the solution is to be
used in acidic medium for oxidation?
(a) 158 g (b) 62.0 g
(c) 31.6 g (d) 790 g
8. The alloy best suited for making metre scales is
(a) Stainless steel (b) Invar
(c) Alnico (d) Tungsten steel
9. Molecular formula of corrosive sublimate is
(b) H (b) Hg2Cl2
(d) HgS (d) HgCl
10. Wrought iron :
(a) Pure iron with 0.1 to 0.2% C
(b) Pig iron
(c) An alloy of steel
(d) Impure sulphide ore iron
11. In the manufacture of iron from haematite, limestone is
added to act as :
(a) Flux (b) Slag
(c) A reducing agent (d) An oxidizing agent
12. An extremely hot copper wire reacts with steam to give
(a) CuO (b) Cu2O
(c) Cu2O2 (d) CuO2
13. Copper displaces which of the metal from their salt solution?
(a) AgNO3 (b) ZnSO4
(c) FeSO4 (d) All of these
14. The colour of FeSO4.(NH4)2SO4.6H2O is
(a) Red (b) White
(c) Blue (d) Green
15. A white solid halide of mercury forms a black mixture
NH4OH. The halide is
(a) HgCl2 (b) HgCl2
(c) Hg2Cl2 (d) Hg2Cl2
16. Spelter is
(a) Impure Cu (b) Impure Zn
(c) ZnO (d) CuO
17. 18 carat gold contains
(a) 18% Gold (b) 24% Gold
(c) 75% Gold (d) 60% Gold
18. Colourless solutions of the following four salts are palced
separately in four different test tubes and a strip of copper is
dipped in each one these. Which solution will turn blue?
(a) KNO3 (b) AgNO3
(c) Zn(NO3)2 (d) ZnSO4
19. Which of the following is used in the preparation of chlorine?
(a) Only MnO2 (b) Only KMnO4
(c) Both MnO2 and KMnO4 (d) Either MnO2 or KMnO4

2 years ago

Share

Answers : (1)

                                        
Answers :

1. b
2. a
3.Silver thiosulphate
4.To extract Ag from argentiferrous lead
5.Zr and Hf have about the same radius
6. Fe
7. 62 gm
8. Steel
9. Hg Cl2
10.Pure iron with 0.1 to 0.2% C
11. c
12. d
13. ZnSO4
14. Green
15. d
16. impure zinc
17. 75% gold
18.a
19. only MnO2


Thank You
Ruchi
Askiitians Faculty
10 months ago

Post Your Answer

More Questions On Inorganic Chemistry

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
in lathanides, why neodymium possess high paramagnatism than others?
 
 
ThetetragonalNd2Fe14B crystal structure has exceptionally high uniaxialmagnetocrystalline anisotropy(HA~7teslas- magnetic field strength H in A/m versus magnetic moment in A.m2).This gives...
  img
Sunil Kumar FP 5 months ago
 
Respected sunil kumar sir, i cann’t clearely understand your answer , so pls give details broadly.
 
muthu sankar g 5 months ago
what is the structure of XeOF6?
 
 
Structure of XeOF6 is pentagonal bipyramidal angle 72 and 90 degree
  img
Sunil Kumar FP one month ago
What is the easiest way of understanding schrodinger wave equation derivation …. coz my mathematical knowledge is very weak....
 
 
You don’t have to worry about the derivation if you are studying in 12 th class or below. But if you really want to understand properly, you should have a good knowledge of...
  img
Naveen Kumar one month ago
 
sir i m a graduating first year student...
 
Rashmi Rai one month ago
How to draw resonance structure for p- hydroxybenzoic acid and m- hydroxybenzoic acid?
 
 
Go through the following Resonance structure of Benzoic acid and draw a similar analysis when hydroxy group is added to the Benzoic acid
  img
Harishwar 4 months ago
compare the stability of the following compounds, (i) (a) ph-ch2(free radical) (b)(ch3)3c(free radical) (c)ch3-ch(free radical)-ch3 (d)ch2=ch-ch2(free radical) (ii)(a) ch2=ch(free radical)...
 
 
ch2=ch-ch2(free radical) is an allyl i mistook it for vinyl. allyls are more reactive than primary secondary and tertiary radicals and vinyls are less reactive. ch2=ch(free radical) is a...
 
sufi digital 2 months ago
 
actually i meant allyls are more stable than primary secondary and tertiary radicals and vinyl is less stable. allyls are stabalised by resonance but vinyls are not. by mistake i wrote...
 
sufi digital 2 months ago
 
and for the second question,answer is ph-ch2(free radical)> ch3-ch2(free radical)>ch2=ch(free radical)>ph(free radical)> ch(triple bond)c(free radical)
 
vineet chatterjee 2 months ago
W allylic and benzylic carbanions are said to have sp2 hybridsation?why?
 
 
Allylic and benzylic cabanions are said to have sp2 hybridization because they lone pairs present on carbon involve in delocalization(Resonance). However delocalization is effective if it...
  img
Ramreddy 3 months ago
View all Questions »