Question # 1

In N.W.F.P the phosphate fertilizers are produced at

Choose an answer

D.I.Khan

Haripur

Nowshera

Dargai

White lead is

Choose an answer

Basic lead acetate

Acidic lead carbonate

Basic lead carbonate

Basic lead hydroxide

The treatment of benzene with isobutene in the presence of sulphuric acid give

Choose an answer

isobutyl benzene

tert-Butyl benzene

n- Butyl benzene

no reaction

Which of the following has least mass?

Choose an answer

2 gram atom of nitrogen

3 x 10²³atoms of C

1 mole of S

7.0 g of Ag.

Outermost shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be

Choose an answer

XY

X₂Y

X₂Y₃

XY₂

Which has largest radius?

Choose an answer

CO³⁺

Mn³⁺

Fe³⁺

Cr³⁺

SO₂ and NO₂produce pollution by increasing

Choose an answer

Alkalinity

Acidity

Neutrality

Buffer action

Which of the following belongs to the halogen family?

Choose an answer

Francium

Polonium

Radium

Astatine

Which of the following compounds has the lowest anion to cation size ratio?

Choose an answer

LiF

NaF

Csl

CsF

Which of the following as a molecular diseaes?

Choose an answer

Allergy

Cancer

German measles

Sickle cell anemia

The substance used as a smoke screen in warfare is

Choose an answer

SiCl₄

PH₃

PCl₅

Acetylene

Ozane is not

Choose an answer

An allotrope

A powerful oxidizing agent

Paramegnetic

a bent molecule

According to MO theory, the species O⁺₂

Choose an answer

Bond order of 2.5

Three unpaired electrons

Diamagnetic character

Stability lower then O₂

The credit of discovering neutron goes to

Choose an answer

Rutherford

Langmuir

Chadwick

Austen

Acetic anhydride is obtained from acetyl chloride by the reaction of

Choose an answer

P₂O₅

H₂SO₄

CH₃COONa

CH₃COCH₃

Helium-oxygen mixture is used by deep sea divers in preference to nitrogen-oxygen mixture because

Choose an answer

Helium is much less soluble in blood than nitrogen

Helium is much less soluble in blood than helium

Under the sea nitrogen and oxygen react to give poisonous nitric oxide

Nitrogen is highly soluble in water.

Sulphonation of benzoic acid produces mainly

Choose an answer

o-Sulphobenzoic acid

m-Sulphobenzoic acid

p-Sulphobenzoic acid

o- and p-Sulphobenzoic acid

Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides due to

Choose an answer

The formation of less stable carbonium ion

Resonance stabilization

Larger carbon -halogen bond

The inductive effect

Dilute hydrochloric acid solution cannot be concentrated by boiling beyond

Choose an answer

11%

33%

44%

22%

Vital force theory was rejected by

Choose an answer

Berzelius

Kolbe

Wholer

Lavoiser

White P when boiled with strong solution of caustic soda produces

Choose an answer

Phosphine

Posh acid

Phosphorous acid

None

More Classes

Other Links

NAT II Biological Science Chemistry MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer