13/04/2025
*Today's PPSC Analyst BPS-17 Chemistry Test Mcqs*
1.Strong oxidizing agent
KMNO4
K2Cr2O7
H2O2
O3
2.Mixing of 0.1M NaOH and 0.1 CH3COOH solution will
Basic
Acidic
Neutral
3.Neutron discovered by
Chadwick
JJ Thomson
4.Most electronegative element in periodic table ?
Fluorine
5.Nail polish remover contains
a.acetone
b.petroleum ether
c. ethanol
d. Benzene
6.In order to prevent ethanol from drinking it is converted to methylated spirit by adding
a.acetone
b. Methanol with some acetone
7.What is the product when acid react with the base
Acid
Base
Salt and water
8.Reducing agent ?
H2S
H2SO4
HNO3
9.TLC is a type of
Partition chromatography
Adsoption chromatography
10.Formalin is made by adding formaldehyde
a.10%
b.40%
11.Sun constitutes how much mass of solar system
a. 98%
b. 99%
c. 2%
d. 82.6%
12.Unit of first 1st order reaction?
13.Which is not use as carrier gas in gas chromatography?
O2
He
Ar
N2
14.Pyrimidal shape
a.H2O
b.PCl3
c.NO2
15.To convert cooking oil to banaspati?
H²
16.Which is more precise technique?
Volumetric
gravimetric spectrophotometeic
17.Ion exchange chromatography separate compounds on the basis of?
Electrostatic attraction
18.Nucleoside composition
19.Size exclusion chromatography separate compounds on the basis of ?
A. Molecules size and shape
B. Molecular wt
20.3d orbital has ..... energy than 3p orbital?
greater
Lower
No change
21.PPB is
ug/ml
ng/ml
ug/L
ng/L
22.When oxygen reacts with haemoglobin to form haemoglobin -O , by decreasing pressure what will be the effect on equilibrium shifts: O2 +Hemo ----> Hemo-O
Shifts towards right
Towards left
No change
None
23.10 A° is equal to
10-⁸ cm
10-⁷ cm
10-⁶ cm
24.Number of theoretical Plates tells about
A.column efficiency
B.Column length
C. Column size
25.What is used to speed up the chemical reaction?
A. Catalyst
B. Acid
C. Base
D. Ligand
26. What is the formula of bleaching powder?
A. Calcium hypoxychloride
B. Calcium oxychloride
C. Calcium chloride
27. The element exists in more than one form
A. Isotropy
B. Anisotropy
C.Allotropy
D. Amorphism
28. Which of the following has cubic structure
A. Diamond
B. NaCl
C. Fe
D. all
29. 6.3 g Oxalic acid dissolved in 250 ml water. How much volume of 0.1 M NaOH required to neutralize the 10 ml of oxalic acid?
A. 10 ml
B. 20 ml
C.
D. 4ml
30. Which one do not follow octet rule?
A. O
B. C
C. F
D. P
31. Oxidation number of Mn in [MnO4]-2
A. 6
B. 7
C. -6
D. -7
32. A cation with +3 charge has 10 electrons. How many proton it have?
A. 8
B. 9
C. 10
D. 13
33. Which of the following has pyramidal shape?
A. SO3
B. (CO3)-²
C. PCl3
D. H2O
34. How to dilute an acid?
A. Acid to water
B. Water to acid
C. Actone to acid
D. Ether to acid
*Correction required*
35. Lattice energy is the energy of
A.Dissolution
B.Dissociation
C.Formation
D.Combustion
36. EDTA is
A. Monodentate
B. Bidentate
C. Hexadentate
D. Tetradentate
37. Which detector is more sensitive to temperature
A. PDA detector
B. Refractive index detector
C. Electrochemical detector
D. Fluorescence detector
38. O2 is has hyberidization
A. sp
B. sp2
C. sp3
D. none of these
39. SP3 has a structure
A. Linear
B. Trigonal
C. Pyramidal
40. Number of asymmetric carbon in 2,3- dibromopropanol?
A.1
B. 2
C. 3
D.
41. Which one has greater yield of NaOH
A. diaghram cell
B. Membrane cell
C. Electrochemical process
D Mercury cell
42. Which form chelates:
A.NH3
B.CN
C.Oxalate
D.Carbonyl
43. Which of the following has acidic nature?
A. Lemon juice
B. Tomato
C. Milk
D. All
44. The process in which H2SO4 react with rubber is called:
OR
Sulfer burn with rubber: (confirm it)
A. Volcanization
B. Sulphonation
C. Desulfruziation
45. EDTA buffer is used to maintain the pH
A. 4
B. 6.4
C. 7.3
D. 10.3
46. Phenolphthalein ph range is :
A. 4.2 - 5.3
B. 6.3- 8.4
C. 8.3- 11
47. What is used for the masking of Fe during the extraction of Metal?
A. Ethylenediamine tetracitic acid
B. Methylenediamine tetracitic acid
C.
D.
48. Softening of cane fiber by soaking in hot water to extract juice
A. Mingling
B.
C. Maceration
D
49. Which enzyme is used for the fermentation of glucose
A.Invertase
B.Zymase
C. Urease
D. Diastase
50. What is the molarity of 0.2 g calcium phosphate in 100 ml of water?
A. 0.001 M
B. 0.006 M
C. 6.1 x10-⁴
D.
