Chemistry MCQs

Explore an extensive collection of Chemistry MCQs covering all key topics of Chemistry Mcqs are including organic chemistry, inorganic chemistry, physical chemistry, atomic structure, chemical bonding, stoichiometry, thermodynamics, kinetics, acids and bases, periodic table, and more. Perfect for students preparing for board exams, competitive tests, and university-level assessments in Pakistan

Chemistry MCQs

Purines and pyrimidines are_________________?

A. Enzymes

B. Nitrogenous bases

C. Carbohydrates

D. Lipids

All the transition elements show_________________?

A. Similar physical properties

B. Similar chemical properties

C. Both A and b

D. None

In solids the temperature is the measure of__________________?

A. Average kinetic energy of molecules

B. Vibrational kinetic energy

C. Translational kinetic energy

D. None of the above

Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?

A. aluminium can be recycled

B. aluminium has very low density

C. aluminium is the most abundant metal in the earth crust

D. aluminium is resistant to corrosion by organic acids.

On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?

A. pink

B. black

C. yellow

D. brick red

What is maximum number of electrons in an orbital with m (magnetic quantum number) = 3 ?

A. 6

B. 4

C. 3

D. 2

Benzene is a good solvent for__________________?

A. fats

B. resins

C. iodine

D. all the above

If a graph is plotted between temperature on x-axis and volume on y-axis for 1 mole of gas then we get straight line which cuts the temperature exis at________________?

a. 0?C

B. 273.16K

C. ?273.16 K

D. ?273.16?C

When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ?

A. phenol is unsaturated

B. 2-bromophenol is insoluble in water

C. a hydroxy group makes the benzene ring more susceptible to electrophilic attack

D. acid-base reaction

The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent ?

A. alkaline aquenous iodine

B. aqueous bromine

C. Fehling solution

D. aqueous NaOH

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