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Chemistry

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oost your exam preparation with our Chemistry MCQs designed for PPSC, FPSC, NTS, OTS, PTS, AJKPSC, BPSC, KPPSC, PMS, CSS, and all competitive exams.
Our content covers Basic Chemistry, Atomic Structure, Periodic Table, Chemical Reactions, Acids & Bases, Organic Chemistry, and everyday chemical concepts.

A 2.24 dm3

B 22.4 dm3

C 1.12 dm3

D 112 dm3

A oxygen

B carbon

C tin

D chlorine

A 0.18 mole

B 0.27 mole

C 0.24 mole

D 0.09 mole

A formula unit

B empirical formula

C molecular formula

D formula mass

A 280

B 300

C 154

D 54

A 6.022 x 1023 atoms of oxygen

B 22-gram electrons

C 6.022 x 1023 atms of carbon

D both B. & C.

A Isotopes with odd atomic number are abundant

B Isotopes with odd atomic number and even mass number are abundant

C Isotopes with even atomic number and even mass number are abundant

D Isotopes with even atomic number and odd mass no are abundant

A 1-mole molecules of water

B 1-gram molecule of water

C 3-gram atoms

D all

A CH2 C12

B CH3C1

C CC14

D CHCL3

A Relative abundance

B Average mass of element

C Number of isotopes

D Relative isotopic mass

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The volume occupied by 2.8 g of N2 at STP______________________?

Which one of the following has the maximum number of isotopes ?

moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?

Which of the following terms is not used for ionic compound ?

The number of isotopes of elements with even mass number and even atomic number are ________________?

One mole of CO2 contains?

Which of the following statements about isotopes is correct ?

Molecular mass of water (18g) means__________________?

Empirical formula of chloroform is____________________?

The number of peaks obtained in mass spectrometry shows____________________?