This document contains an unsolved chemistry paper from 1996 containing 50 multiple choice questions. The questions cover a wide range of chemistry topics including properties of elements, chemical reactions, stoichiometry, acid-base reactions, and organic chemistry. No answers are provided for the questions.
2. SECTION – I
Single Correct Answer Type
There are five parts in this question. Four choices are given for each part and one of them is
correct. Indicate you choice of the correct answer for each part in your answer-book by
writing the letter (a), (b), (c) or (d) whichever is appropriate
3. 01 Problem
Bauxite is an acid mineral of :
a. Boron
b. Barium
c. Aluminum
d. Bismuth
4. 02 Problem
Thallium shows different oxidation state because:
a. Of its amphoteric character
b. Of its high reactivity
c. It is a transition metal
d. Of inert-pair effect
5. 03 Problem
Which is most amphoteric?
a. MgO
b. Na2O
c. CaO
d. AI2O3
6. 04 Problem
The wire in the flash bulb is made up of :
a. Mg
b. Ba
c. Ag
d. Cu
7. 05 Problem
Which of an ore of potassium?
a. Crinoline
b. Dolomite
c. Bauxite
d. Carnality
8. 06 Problem
The basic character of hydrides of Vth group elements decreases in the order:
a. SbH3>PH3>AsH3>NH3
b. NH3>SbH3>PH3>AsH3
c. NH3>PH3>AsH3>SbH3
d. SbH3>AsH3>PH3>NH3
9. 07 Problem
Which of the following has maximum value of cation/anion ratio?
a. KCI
b. NaCI
c. CaF2
d. MgCI2
10. 08 Problem
HCI is added to the following oxides which one would give H2O2
a. PbO2
b. MnO2
c. BaO
d. None of these
11. 09 Problem
Which of the following pair of atomic numbers represents s-blocks element?
a. 6,2
b. 7,15
c. 3,20
d. 9,17
12. 10 Problem
Which one of the following is smallest in size?
a. O2-
b. N3-
c. F-
d. Na+
13. 11 Problem
Which one of the following of correct order of the size?
a. Na<Mg<K
b. O2-<F-<Mg2+
c. P<CI<Br
d. I-<I<I+
14. 12 Problem
Electron affinity of noble gas element is :
a. Low
b. High
c. Very high
d. Zero
15. 13 Problem
Which one of the following benefication process is used for the minerals
AI2O3.2H2O?
a. Leaching
b. Liquidation
c. Froth floatation
d. Magnetic separation
16. 14 Problem
The process of converting hydrated alumina is called:
a. Smelting
b. Roasting
c. Calcinations
d. Dressing
17. 15 Problem
The lightest metal is:
a. Fe
b. Li
c. Ag
d. Cu
18. 16 Problem
( NH4 )2 SO4
n(CF2== C X Here, X is :
a. RMMA
b. PVC
c. PAN
d. None of these
19. 17 Problem
Amongest the following. The strongest base is :
a. Aniline
b. 2.4.6 -Trinitron aniline
c. N , N – diethyl aniline
d. 2, 4, 6- trim ethyl aniline
20. 18 Problem
Nitrosoamine (R2N-N=0) are insoluble in water. On heating them with conc. H2SO4
they secondary amines. The reaction is called:
a. Etard’s reaction
b. Fries reaction
c. Liberman nitroso reaction
d. Perkin’s reaction
21. 19 Problem
Benedict solution provides:
a. Li+
b. BO2+
c. Cu2+
d. Ag+
22. 20 Problem
Acetaldoxime reacts with P2O5 to to give:
a. Ethyl cyanate
b. Methyy cyanide
c. Ethyl cyanide
d. Mixture of all these
23. 21 Problem
The colour p-amino azo benzene is:
a. Cango red
b. Orange
c. Magenta
d. Indigo
24. 22 Problem
With Tollens’ reagent a silver mirror will be formed by
a. Acetic acid
b. Acetaldehyde
c. Acetyl chloride
d. Acetone
25. 23 Problem
Ethyl alcohol is heated with red phosphorus and HI then which of the foll0woing
is formed?
a. CH4
b. C2H4
c. C2H6
d. C2H5
26. 24 Problem
When charcoal burns is jar it forms the gases carbon monoxide and carbon
dioxide:
2C + O2 2CO
2COs + O2 2CO2
These reaction are called:
a. Substitution
b. Ionization
c. Oxidation-reduction
d. Decomposition
27. 25 Problem
Which of the statement is wrong among the following?
a. Haber’s process of NG3 requires iron as catalyst
b. Hydrogenation of oil uses iron as catalyst
c. Oxidation of SO2 to SO3 required V2O5
d. Frieda-craft’s reaction uses anhydrous ALCL3
28. 26 Problem
The chief source of bromine is :
a. Sea-weeds
b. Chile-salt petre
c. Carnalite
d. Sea water
29. 27 Problem
Which of the following gas cannot be dried by canc. H2SO4?
a. Ph3
b. NO
c. H2
d. CO2
30. 28 Problem
If NaOH is added to an aqueous solution of Zn2+ ions white precipitate appears
and on adding excess NaOH. The precipitate dissolves. In solution zinc is in the :
a. Anionic part
b. Cationic part
c. Both in cationic and anionic part
d. There is no zinc left in the solution
31. 29 Problem
The bubble of impure phosphene burns into flame as soon as it comes in contact
with air and produces a ring of white smoke. This smoke is due to:
a. The formation of phosphorus nitrite
b. The oxidation of phosphene to pentoxide
c. The formation of phosphorus phosphene
d. The carbon particles present in the phosphene
32. 30 Problem
Which of the following element is responsible for oxidation of water to O2 in
biological processes?
a. Mn
b. Cu
c. Mo
d. Fe
33. 31 Problem
Plaster of paris hardens by
a. Changing into CaCO3
b. Combining with water
c. Giving out water
d. Giving off CO2
34. 32 Problem
5.6 L of a gas at S.T.P. weights equal to 8g.The vapour density of gas is
a. 16
b. 40
c. 08
d. 32
35. 33 Problem
How many ions are produced from [ Co(NH3)6]Cl3 in solution:
a. 4
b. 2
c. 6
d. 3
36. 34 Problem
H
For the reaction, CH3COCH3+I2 products The rate is governed by
expression dx [acetone] [H+] The order w.r.t I2 is
k
dt
a. 1
b. 0
c. 3
d. 2
37. 35 Problem
1mL of H2O solution give 10 mL of O2 at NTP. It is
a. 20 vol. H2O2
b. 10 vol. H2O2
c. 40 vol. H2O2
d. 30 vol. H2O2
38. 36 Problem
The pH of a solution whose [OH-] = 10-7 M is :
a. 14
b. 0
c. -7
d. 7
39. 37 Problem
Which of the following carbonates is least soluble in water?
a. NaHCO3
b. KHCO3
c. CaCO3
d. Na2SO4
40. 38 Problem
Hydrogen atoms are held together to form hydrogen molecule by:
a. Ionic bond
b. Detive bond
c. Hydrogen bond
d. Covalent bond
41. 39 Problem
The atoms in which X are equal are called isotones. Here X is :
a. Mass number
b. Atomic number
c. Neutrons
d. Electrons
42. 40 Problem
In which of the following group of periodic table mp/bp increases down the
group?
a. Group 1
b. Group 2
c. Group 17
d. Group 13
43. 41 Problem
Bleaching powder is an example of ;
a. A complex salt
b. An acidic salt
c. A mixed salt
d. A double salt
44. 42 Problem
Dry ice is :
a. Solid NH3
b. Solid SO2
c. Dry CO2
d. Solid CO2
45. 43 Problem
The classification of element by establishing a relationship between atomic
weight and atomic complex volume was attemped by:
a. Raman
b. Meyer
c. Dobernier
d. New lands
46. 44 Problem
Which one of the following gases turns potassium dichromate paper green?
a. NCI
b. SO2
c. NH3
d. NO2
47. 45 Problem
The partial pressure of hydrogen in a flask containing 2g of H2 and 32g of SO2
is:
1
a. of total pressure
16
11
b. 2
of total pressure
2
c. 3 of total pressure
1
d. 8 of total pressure
48. 46 Problem
The low relating to the diffusion of gas was given by:
a. Einstein
b. Boyle’s
c. Graham
d. Charle’s
49. 47 Problem
The number of unpaired electrons in chromium (atomic number-24) is:
a. 6
b. 5
c. 2
d. 3
50. 48 Problem
The exothermic reactions:
a. HR=HP
b. HR<HP
c. HR>HP
d. None of these
51. 49 Problem
Solid CH4 is:
a. Ionic solid
b. Covalent solid
c. Molecular solid
d. Does not exist
52. 50 Problem
Which one of the following compounds is found abundantly in nature?
a. Maltose
b. Fructose
c. Cellulose
d. glucose
