BPSC Chemistry Lecturer Past Papers

BPSC chemistry lecturer past papers mcqs for preparation of chemistry subject specialist test in Balochistan.

BPSC Chemistry Lecturer Past Papers MCQs

In the infrared spectrum of the carboxylic acid group, the C=O bond shows the peak-shaped band at the range of?

1. 1510 cm⁻¹
2. 1710 cm⁻¹
3. 2010 cm⁻¹
4. 2800 cm⁻¹

Which of the following process explain the process of tautomerism?

1. CH3COOH + C2H5OH ⇌ CH3COOC2H5 + H2O
2. N2 + 3H2 ⇌ 2NH3
3. 2SO2 + O2 ⇌2SO3
4. None

Which substances are synthesized when ultraviolet radiations reaction with (CFCs) Chlorofluorocarbons and they result in the breakdown of ozone layer?

1. Cl° and C° F2Cl
2. Cl° and O°
3. Cl2CF° and C° l
4. C° lO + F°

“Anti allergic medicines are also called antihistamines”. The histamine is a chemical produced in body due to the?

1. Deamination of amino acids
2. Decarboxylation of amino acids
3. Transamination of amino acids
4. Decarboxylation of fatty acids

In chromatographic analysis the principle used is?

1. Absorption
2. Distribution
3. Adsorption
4. Evaporation

30 grams of acetic acid reacts with excess of ethyl alcohol to form 40 grams of ethyl acetate during esterification then percentage yield of ester is?

1. 90.9%
2. 85.9%
3. 50%
4. 80%

The salt which is formed by neutralization of weak acid and weak base is?

1. Nacl
2. CH3COONA
3. (NH4)2 CO3
4. NH4Cl

Only one pair of the liquid in the following set of solutions does not obey the Raoul’s Law. Identify it?

1. Methanol and ethanol
2. Benzene and toluene
3. n-hexane and n-octane
4. Propanol and propanone

Automative antifreeze is a 60% weight/weight aqueous solution of ethylene glycol (C2H6O2) then its molality is?

1. 34 moles/kg
2. 24.2 moles/kg
3. 20 moles/kg
4. 28 moles/kg

The given reaction is the example of Free Radical Substitution (CH4 + Cl2 → CH3Cl + HCL). The order of this reaction is?

1. Zero
2. First
3. Second
4. Third