Question # 1

During esterifcation, the alcobol molecule acts as:

Choose an answer

Oxidizing agent

Electrophile

Reducing agent

Nucleophile

The ratio of diffusion of equal volume of He and SO₂is (molecular mass He = 4, SO₂= 64):

Choose an answer

1:4

16:1

1:16

4:1

The boiling point of Kr is higher (-152.23°C) than that of helium (-268.6°C) due to

Choose an answer

Kr forms greater number of covalent bonds

greater polarizability of Kr than He

Kr has lowest freezing point

Kr is in liquid state at ordinary temperature

The red brown ppt. of Fehling solution and benedict solution tests are of

Choose an answer

Ag

Cu2O

CuO

AgBr

Which one of the following elements is most electropositive out of group I -A and II-A group?

Choose an answer

K

Mg

Na

Ca

Which one of the following gases has lowest density at room temperature:

Choose an answer

NH₃

Ne

N₂

CO

Highest oxidation state af the transition elements is

Choose an answer

+8

+7

+5

+1

The reagent for alkaline hydrolysis of ethyl bromide to form ethyl alcohol is

Choose an answer

water at room T

Alcoholic KOH+heat

Ethanol + heat

dil. NaOH+ heat

Which of the following compound shows the geometrical isomerism

Choose an answer

2-butene

2-butyne

2-butanol

Butanol

Oxidation state of Mn' in KMnO4. K2MnO4, MnO2 and MnSO4 is in the order

Choose an answer

+7.+6.+2,+4

+6,+7,+2,+4

+7. +6.+4.+2

+4, +6, +7,+2

The addition compound obtained by reacting acetaldelyde and HCN, when Iydrolyzed gives

Choose an answer

Ethyl alcohol

Methyl cyanide

2-Hydroxy propanoic acid

Ethyl cyanide

The standard enthalpy change in the formation of 1 mole of a compound from its elements in their standard physical states is

Choose an answer

Enthalpy of formation

Enthalpy of atomization

Enthalpy of neutralization

Internal energy change

An electrophile may be

Choose an answer

Positive

Negative

Neutral

Both c and a

Time required to deposit one millimole of aluminium metal by the passage of 9.65 amperes through molten electrolyte containing aluminium ion is

Choose an answer

30 s

10 s

30,000 s

10,000 s

Platinum is poisoned by

Choose an answer

Arsenic

Silver

Argon

Zinc

In exothermic reaction decrease in potential energy of the products will result in

Choose an answer

Decreases in kinetic energy of the particles

Increases in kinetic energy of the particles

No change in kinetic energy

Decreases in activation energy

The hydrocarbons having double bonds normally end with suffix

Choose an answer

Ane

Ene

Yne

Oic

How many molecules of chlorine adds in benzene in the presence of sunlight

Choose an answer

One

Two

Three

Four

Which of the following is not an ortho-para directing group

Choose an answer

Taste of lower alcohols is:

Choose an answer

Sweet

Bitter

Our

Salty

Dehydration of ethyl alcohol yields

Choose an answer

Aldehyde

Ketone

Acid

Alkene

When a carbon atom forms single bonds with other carbon atoms, these hybrid orbitals overlap with the orbitals of hydrogen to form four bonds which are

Choose an answer

Three sigma and one P_i

Two sigma and two P_i

One sigma and three P_i

sigma

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