Unit of Avogadro's number is _______________.

(a)

mol

(b)

g

(c)

mol ^-1

(d)

No unit

Consider the following statements and pick the incorrect statement(s).
1. Schrodinger wave equation is used to determine the probability of finding a electron at a given point in space.
2. The energy of a electron at infinity is positive
3. Angular momentum quantum number gives information regarding subshells.

(a)

1&3

(b)

only 1

(c)

only 2

(d)

1,2 & 3

Which of the following process is important in food industry?

(a)

Dehydration

(b)

Dehalogenation

(c)

Hydrogenation

(d)

Carboxylation

In chelating method of softening of hard water_______________ is used

(a)

magnesia

(b)

lime

(c)

EDTA

(d)

washing soda

Which one of the following is known as Hydrogen sponge?

(a)

Lithium hydride

(b)

Diborane

(c)

Palladium hydride

(d)

Ammonia

Which of the following is a saline hydride?

(a)

HCI

(b)

NH₃

(c)

NaH

(d)

PbH

Spodumene is the silicate mineral of _____

(a)

lithium

(b)

sodium

(c)

cesium

(d)

francium

Which of the following are stored under oil?

(a)

Alkali metals

(b)

Coinage metals

(c)

Noble metals

(d)

Phosphorous

Which of the following is the correct mathematical relation for Charles' law at constant pressure?

(a)

\(V\propto T\)

(b)

\(V\propto t\)

(c)

\(V\propto \frac{1}{T}\)

(d)

all of above

The standard free energy change ΔG⁰ is related to k (equilibrium constant) as ________

(a)

ΔG⁰=RT log k

(b)

ΔG⁰=RT log k

(c)

ΔG⁰=-2.303 RT log k

(d)

ΔG⁰=2.303 RT log k

Assertion (A): Spontaneous process is an irreversible process and may be reversed by some external agency.
Reason (R): Decrease in enthalpy is a contributory factor for spontaneity.
Codes:
(a) both A and R are true and R is the correct explanation of A
(b) both A and R are true and R is not correct explanation of A
(c) both A and R are false
(d) A is false but R is true

(a)

both A and R are true and R is the correct explanation of A

(b)

both A and R are true and R is not correct explanation of A

(c)

both A and R are false

(d)

A is false but R is true

A pressure cooker reduces cooking time for food because ___________

(a)

Cooking involves chemical changes helped by a rise in temperature

(b)

Heat is more evenly distributed in the cooking space

(c)

Boiling point of water involved in cooking is increased

(d)

The higher pressure inside the cooker crushes the food material

According to Valence bond theory, a bond between two atoms is formed when _____________

(a)

fully filled atomic orbitals overlap

(b)

half filled atomic orbitals overlap

(c)

non- bonding atomic orbitals overlap

(d)

empty atomic orbitals overlap

\(\underset { \underset { OH }{ | } }{ { CH }_{ 3 }-{ CH }_{ 2 }-{ CH }-CH_{ 2 }-{ CH }_{ 2 }-{ CH }_{ 3 } } \) and  \(\underset { \underset { OH }{ | } }{ { CH }_{ 3 }-{ CH }_{ 2 }-{ CH_{ 2 } }-CH-{ CH }_{ 3 } } \)  are ___________

(a)

Functional isomers

(b)

Position isomers

(c)

Chain isomers

(d)

These are not isomers

Which one of the following shows functional group isomerism?

(a)

Ethene

(b)

Acetone

(c)

Ethane

(d)

Propane

In  \(C{ H }_{ 3 }-\underset { \overset { | }{ C{ H }_{ 3 } } }{ C } H-C{ H }_{ 3 }\) most stable radicals/ions formed on homolysis is/a __________

(a)

\(C{ H }_{ 3 }-\underset { \overset { | }{ C{ H }_{ 3 } } }{ \overset { . }{ C } } H-C{ H }_{ 2 }\) and H

(b)

\(C{ H }_{ 3 }-\underset { \overset { | }{ C{ H }_{ 3 } } }{ \overset { . }{ C } } H-C{ H }_{ 2 }\) and H

(c)

\(C{ H }_{ 3 }-\underset { \overset { | }{ C{ H }_{ 3 } } }{ \overset { + }{ C } } -C{ H }_{ 3 }\) and H

(d)

\(C{ H }_{ 3 }-\underset { \overset { | }{ C{ H }_{ 3 } } }{ \overset { - }{ C } } -C{ H }_{ 3 }\) and H

The most stable carbocation is ____________

(a)

\(C{ H }_{ 3 }-\overset { + }{ C } { H }_{ 2 }\)

(b)

\(C{ H }_{ 3 }-\overset { + }{ C } H-C{ H }_{ 3 }\)

(c)

\(C{ H }_{ 2 }=CH-\overset { + }{ C } { H }_{ 2 }\)

(d)

\(\overset { + }{ C } { H }_{ 3 }\)

The electrometric effect is ___________

(a)

Permanent effect

(b)

Temporary effect

(c)

p-electrons transfer in the effect

(d)

Both (b) and (c)

Consider the following compounds,  

Hyper conjugation occurs in ____________

(a)

(i) and (iii)

(b)

(i) only

(c)

(ii) only

(d)

(iii) only

Statement - I : All the organic molecules contain covalent bonds.
Statement - II : Organic molecules are formed by the mutual sharing of electrons between atoms.

(a)

Statement-I and II are correct and statement-Il is correct explanation of statement-I.

(b)

Statement-I and II are correct but Statement-II is not correct explanation of statement-I.

(c)

Statement-I is correct but statement-Il is wrong.

(d)

Statement-I is wrong but statement-Il is correct.

Which one of the following is an example for negative mesomeric effect ?

(a)

-SH

(b)

-SR

(c)

-NH₂

(d)

-NO₂

Which of the following is aliphatic saturated hydrocarbon?

(a)

C₈ H₁₈

(b)

C₉ H₁₈

(c)

C₈ H₁₄

(d)

All of these

\({ CH }_{ 3 }-\overset { \overset { { CH }_{ 3 } }{ | } }{ CH } -{ CH }_{ 2 }-{ CH }3\overset { { CI }_{ 2 } }{ \underset { UV\quad light }{ \longrightarrow } } \underset { Major }{ (A) } ;\) the compound 'A' is ____________

(a)

\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ CH } -\underset { \overset { | }{ CI } }{ { CH }_{ 2 } } -{ CH }_{ 3 }\)

(b)

\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ \underset { \overset { | }{ CI } }{ C } } -{ CH }_{ 2 }-{ CH }_{ 3 }\)

(c)

\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 3 } } }{ CH } -{ CH }_{ 2 }-{ CH }_{ 2 }CI\)

(d)

\({ CH }_{ 3 }-\overset { \underset { | }{ { CH }_{ 2 }CI } }{ \underset { \overset { | }{ H } }{ C } } -{ CH }_{ 2 }-{ CH }_{ 3 }\)

Select the correct statement

(a)

Deviation from normal tetrahedral angle in cycloalkane is called angle stain

(b)

Due to torsional stain eclipsed form has higher energy than the staggered form of a compound

(c)

Chair form of cyclohexane is the most stable conformation of cyclohexane

(d)

All of these

The cylindrical shape of alkyne is due to _________

(a)

Two sigma C-C and one \(\pi\) C-C bonds

(b)

One sigma C-C and two \(\pi\) C-C bonds

(c)

Three sigma C-C bonds

(d)

Three \(\pi\) C-C bonds