Question # 1

Which if the following will have the same number of molecules at S.T.P?

Choose an answer

280cm³ of CO₂ and 280cm³ of N₂O

11.2dm³ of O₂and 32g of O₂

44g of CO₂and 11.2dm³ of CO

28g of N₂and 5.6dm³ of oxygen

Sugar are polyhydroxy compounds of

Choose an answer

Carboxylic acid

Ketones

Aldehyde

Both B and C

Naturally occurring isotopes of silver are

Choose an answer

,Two

, Four

, Forty seven

, sixteen

The temperature in the incineration of industrial and hazardons waster process had a range:

Choose an answer

950 to 1300°C

500 to 900°C

250 to 500°C

900 to 1000°C

Halogens form halogen acids. HF is the weakest among all of them This is due to the reason that

Choose an answer

fluorine is a very small-sized atom

fluorine is highly electronegative atom

there is strong hydrogen bonding in HF

the polarity of HF bond is less

Ethene can give all of the following reactions except

Choose an answer

Addition

Free radical substitution

Hydrohalogenation

Hydration

Primary alcohols and aldehydes are oxidized to corresponding:

Choose an answer

Alkanes

Alkenes

Alkynes

Carboxylic acids

Cholesterol is a precursor of steroid hormones, Choose the class of steroid:

Choose an answer

a carbohydrate

a hydrocarbon

a natural lipid

a protein a hydrocarbon

Which one is nitrogen fertilizer among the following:

Choose an answer

calcium sulphate

urea

magnesium carbonate

potassium phosphate

In the atosphere, CO₂is about

Choose an answer

0.01%

0.03%

0.05%

0.09%

Esterification of CH3COOH isreaction

Choose an answer

Acid base

Electrophilic

Redox

Nucleophilic

The boiling points of alcohols are higher than the corresponding alkanes, This is because

Choose an answer

Of hydrogen bonding existing between molecules of alcohols

Alkanes are dipolar compounds

Alcohols are sweet in taste

Alcohols are soluble in water

Acetamide is

Choose an answer

Highly acidic

Highly basic

Neutral

amphoteric

With the progressive of the reaction the slope of the curve between concentration of product and time

Choose an answer

Gradually becomes more steep

Gradually becomes less steep

No change occurs in slope

None of these occurs

Physical properties of alkanes increase with increase of all physical constants except

Choose an answer

Boiling points

Melting points

Density

Solubility

When alkyl halide is heated with aqueous solution of ammonia at 100°C the major product is

Choose an answer

Primary amine

Secondary amine

Tertiary amine

Mixture of amines and salt

If the value of azimuthal quantum number is 3, then values of m the magnetic quantum no. will be

Choose an answer

0, 1, 2, 3

+3, +2, +1, -1, -2, -3

0, -1, -2 ,-3

-3, 0, +3

Diethyl ether is obtained by Williamsons synthesis using

Choose an answer

Ethanol + Na + C₂H₅Br

Ethanol + Mg + C₂H₅Br

Methanol + Na + CH₃Br

Methanol + Mg + CH₃Br

When phenol is distilled with zinc dust. It is reduced to

Choose an answer

Benzene

Benzaldehyde

Toluene

Hexanol

B-atom in BF₃has

Choose an answer

sp³hybridization

sp²hybridization

sp hybridization

no hybridization

Most transition elements show

Choose an answer

Diamagnetic behavior

Ferromagnetic behavior

Paramagnetic behavior

None of these

The organic compounds which are derivative of hydrocarbons of oxygen are:

Choose an answer

Carbohydrates

Phenols

Alcohals

All of these

More Classes

Other Links

Chemistry General Science Test Medium Mode 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

Choose an answer