| Post Name | LABORATORY ASSISTANT (FACTORY) |
|---|---|
| Department | State Farming Corporation of Kerala Ltd. |
| Question Paper Code | 140/2014 |
| Date of Test | 27 August 2014 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Which among the following sets of quantum numbers is not allowed for the values of (n, l, m, s)?
Answer
A. (2, 1, 1, 2)
2
The effective nuclear charge in the electron in He atom is :
Answer
B. 1.7
3
The electron configuration of Fe²⺠is:
Answer
B. [Ar] 3dâś 4sâ°
4
The radius ratio between 0.025 and 0.414 favours the coordination number of :
Answer
B. 4
5
_ sp* hybridization results in ______ arrangement of hybrid orbitals.
Answer
C. tetrahedral
6
The shape of NH, is:
Nes
Answer
B. pyramidal
7
Ethene has sigmas bonds and _____ pi bonds.
Answer
D. 5,1
8
Which among the following is the artificial radioactive series ?
Answer
C. Neptunium Series
9
The splitting of spectral lines in an electric field is called :
Answer
C. Stark effect
10
Which among the following is paramagnetic ?
Answer
Question Cancelled
11
Which among the following can form intramolecular hydrogen bonding ?
Answer
C. o-nitrophenol
12
Photoelectric effect demonstrates the ______ nature of light.
Answer
B. particle
13
Ina reversible reaction, the reaction rate of the backward reaction is :
Answer
A. Positive
14
Hydrolysis of ethyl acetate in presence of excess of water is a order reaction.
Answer
C. pseudo first
15
The rate of a chemical reaction doubles for every 10°C rise in temperature. If the temperature |
is increased by 60°C, the rate of the reaction increases by about : |
Answer
D. 64 times
16
Quantum yield of the reaction 2HBr - H,+Br is :
Answer
B. 2
17
Emission of light as a result of chemical reaction is ;
Answer
C. chemiluminescence
18
Substances which reduce the quantum yield of photochemical reactions are called :
Answer
A. photo inhibitors
19
Which of the following is a correct notation for an orbital with n = 4 and l = 2?
Answer
C. 4d
20
Naâş is isoelectronic with:
Answer
B. AlÂłâş
21
Which of the following hybridizaton tends to give maximum electro negativity for an atom ?
Answer
B. sp
22
Which of the following is a p-block element ?
Answer
D. Sb
23
The hybridization of chlorine in CIF, is :
Answer
B. sped
24
Which of the following is unstable according, to M.O. theory ?
Answer
C. He,
25
A molecule having all the bond angels equal to 90° is :
Answer
C. SF,
26
âThe hybridization of carbon CO) is :
Answer
A. sp
27
Which of the following and ,Si°° are isotones ?
Answer
B. jgAP9
28
The stable end product of Uranium series is :
Answer
B. â g9Pb?06
29
Which of the following nuclide is a fissile material ?
Answer
D. 9,05
30
The nuclear fuel used in the Nagasaki Bomb was :
Answer
B. 94Pu2?
31
The electrochemical equivalent (z) of an element is related to its equivalent mass (E) by the equation:
Answer
B. E = 96500z
32
The unit of molar conductance is :
Answer
C. ΊâťÂš cm² molâťÂš
33
Which of the following particles is the best projectile in bombardment reactions ?
Answer
C. ot
34
The isotope used for the treatment of Thyroid disorders is:
Answer
C. Iš³š
35
Which of the following is not a chelating ligand ?
Answer
D. Ammonia
140/2014 6 A
36
Vitamin B,, is a coordination compound of :
|
Answer
B. CO
37
Inter system crossing, is essential for :
Answer
A. Phosphorescence
38
Smoke is an example of :
Answer
C. asolid aerosol
39
How many significant figures are present in the number 0.0038 ?
Answer
C. 2
40
A weighing balance is accurate to the nearest milligram. Which is the correct numerical
representation for the weight of the substrate ?
Answer
C. 2.000 g
41
The term used to express precision :
Answer
A. Standard deviation
42
Closeness to the measured value to the correct value is called as :
Answer
B. Accuracy
43
In the titration of NaOH against oxalic acid, the indicator used is :
Answer
A. Phenolphthalein
44
The external indicator used in dichrometry titration is :
Answer
B. Potassium ferricyanide
45
The unit for concentration which is independent of temperature :
Answer
B. Molality
46
The substance used to prepare a solution of known concentration is :
Answer
A. Primary standard
47
Pick out the odd one :
|
Answer
A. Astronomy
48
A hypothesis, if passes all challenging tests, is promoted to :
|
Answer
B. Null hypothesis
49
The best known scientific method is :
Answer
A. Positivism
50
Which of the following statements about radio activity is not correct ?
Answer
D. The rate is affected by change of temperature or pressure
51
Radioactive disintegration differs from a chemical change in being :
Answer
C. A nuclear process
52
Answer
D. Carry charge opposite in sign but equal in magnitude than a proton
' 140/2014 8 A
53
Alpha rays consist of a stream of :
Answer
B. He**
54
Unit of radioactivity :
Answer
Question Cancelled
55
When passing through a magnetic field, the largest deflection is experienced by :
Answer
B. rays
56
With the passage of time, the rate of radioactive disintegration :
Answer
B. Decreases
57
In the reaction ,Be?+Xâ 5B? +, X is:
Answer
C. Positron
58
Which of the following projectiles is the best for bombarding the articles ?
Answer
D. neutrons
59
Which of the radioactive series has Bismuth as end product ?
Answer
B. 4n+1
60
The lowest lattice energy among, the following crystals is :
Answer
D. CsCl
61
âThe Born exponent of Ag' ion type is:
Answer
D. 10
62
The correct order of decreasing polarisibility of the ions is :
Answer
D. 1, Br, Cl, F
A 9 140/2014
{P.T.O.}
4 a Se.
63
Which of the following has the highest ionization energy ? |
Answer
D. AP+GABt +e
64
The magnitude of lattice energy of a solid increases if the ions are : |
;
Answer
B. Small
65
Born-Haber cycle is used to determine :
Answer
C. Lattice energy
66
Paracetamol is
Answer
B. Anti pyretics
67
The maximum electron capacity of any orbital is :
Answer
A. 2
68
Which among the following has the highest ionization energy ?
Answer
C. Nitrogen
69
The function of the atom bomb is based on :
Answer
B. nuclear fission and chain reactions
70
With dilution, the molar conductance of an electrolytic solution ;
Answer
B. increases |
71
Bauxite is an ore of :
Answer
B. Aluminium
72
The electron affinity of group 18 elements is :
|
Answer
A. zero
73
The most electronegative element is :
Answer
D. fluorine
74
The coordination number of cobalt in
Answer
D. 6
75
Born-Haber cycle is used to calculate :
Answer
D. lattice energy
76
Sulphide ions are concentrated by :
Answer
B. froth floatation
77
Fructose is
Answer
B. ketohexose
78
Number of elements in the 4'" period of the periodic table is :
|
Answer
C. 18
79
âThe most stable form of cyclohexane is :
|
Answer
A. chair
80
Identify the spectra that corresponds to the frequency 690 cm7!:
Answer
C. IR
81
Which among the following state functions is an extensive property of the system ?
Answer
B. volume
82
The photon of wavelength 400 nm corresponds to :
Answer
B. - 25,000 cm=? =
83
The reagent used for the identification of nickel ion in qualitative analysis is :
Answer
B. DMG
84
The shift of an absorption band to the longer wavelength region is called :
Answer
B. red shift
85
The catalyst used for Friedal Crafts reaction is :
Answer
A. Anhydrous AICL,
86
The element with highest electron affinity among halogens is :
Answer
B. Cl
87
Boiling point of water is much higher than the expected value. This is due to .
Answer
B. Inter molecular hydrogen bonding
88
Conduction due to the direct flow of electrons is known as :
Answer
C. electronic conduction
89
The quantum number âsâ denotes :
Answer
D. spin orientation of an electron
90
The compounds H,O and H,O, can be used to illustrate the law of :
Answer
C. multiple proportion
91
The first transition series begins with :
Answer
B. scandium
92
A triangular arrangement of atoms arises due to :
Answer
B. sp? hybridisation
93
âThe critical temperature T, is related to Vanderwaalâs constant by the relation :
Answer
C. :-T,=8a/27Rb
94
Give the number of modes of vibrations possible for CO, :
Answer
D. 4 ,
95
The hydrolysis of sodium acetate results in a solution which is :
Answer
B. _ basic
96
Ostwald dilution law is applicable to : ;
Answer
A. weak electrolytes
97
The potential of saturated calomel electrode at 25° Cis:
Answer
C. 0.2422 V
98
NaCl belongs to the crystal system :
Answer
B. cubic
99
IR spectra of solid samples are usually taken by mixing the sample with :
Answer
C. KBr
100
Crystalline solids are characterised by :
Answer
D. all the above
-o00-
140/2014 14 A
Discussion
Ask a doubt or share a tip.
No comments yet â start the discussion.