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pressure remaining constant, all gases expand (or contract) by the same fraction of its volume at `0^(@)C` for `1^(@)` rise (or fall) in TEMPERATURE.
The volume of a GIVEN amount of any gas at constant pressure increases LINEARLY with temperature at any scale, i.e., `""^(@)CorK`.
In the plot V VS T at constant pressure, a straight line of positive slope is obtained. This line passes through the ORIGIN only if the temperature is in the Kelvin scale.
For any number of gases of the same volume and at the same temperature, the slopes of the above plot ( c) would be same for all these gas samples.

Adsorption is always exothermic.
Physisorption may TRANSFORM into chemisorption at high TEMPERATURE.
Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature.
Chemisorption is more exothermic than physisorption, HOWEVER it is very SLOW due to higher energy of activation.

The `PF_(4)^(-)` ION exists
The `NF_(4)^(-)` ion does not exist
N can FORM `p PI - p pi` bonds with itself and with other elements having small size and high E.N.
The catenation tendency is weaker in N than P

CSCL CRYSTAL likely to show Schottky defect
CsCl crystal likely to show Frenkel defect
PHOTOSENSITIVITY of AgBr is due to the PRESENCE of Frenkel defect in it.
Crystals having F - centres are coloured and paramagnetic

Thermal stability of alkaline earth METAL chloride decrease with increasing molecular mass but reverseorder is true for their MELTING point.
Thermal stability of boron halides increase with decreasing molecular mass but reverse order is true for their melting point
Thermal stability of beryllium halides increase with decreasing molecular mass and same order is ALSO true for their melting point
Thermal stability ofhydra ACIDS of halogens increase with decreasing molecular mass and same order is also true for their melting point

i only
i and II
ii and III
i, ii and iii

Boiling point of m-hydroxybenzaldehyde is greater than o-hydroxybenzaldehyde
Boiling point of `CHCl_(3)` is HIGHER than `CCl_(4)`
Melting point `BeCl_(2)` is higher than `BeF_(2)`
Boiling point HF is greater than `CH_(3)F`

all are CORRECT 
only (II) and (III) 
only (I) and (III) 
only I and II 

(M and O) and (N and P) are two pairs of diastereomers
Bromination PROCEEDS through trans-addition in both the REACTIONS
O and P are identical molecules
(M and O) and (N and P) are two pairs of enantiomers

the number of nearest NEIGHBOURS of an ATOM present in the topmost layer is 12.
the packing efficiency of atom is 74%.
the number of octahedral and tetrahedral voids PER atom are 1 and 2 respectively.
the unit cell edge length is 2V2~ TIMES the radius of the atom.

(M and O) and (N and P) ar two pairs of enantiomers
Bromination PROCEEDS through TRANS-addition in both the reaction
O and P are identical MOLECULES.
(M and O) and (N and P) are two pairs of diastereomers.

If (X) is PhCH=O, then (Z) is ALSO PhCH=O
If (x) is PhCH=O, then (y) is also Ph-CH=CH-CH=CH-COOH

x can be `CH_3-CH=O`

Q and T are homologues.

racemic MIXTURE is an equimolecular mixture of a pair of enantiomers
configuration of a molecule means stable three - dimensional arrangement of the groups ATTACHED to a SPECIFIC ATOM of the molecule
melting & boiling points of 2 enantiomers are diferent
a molecule may be optically active or inactive if more than one asymmetric carbon is present in the molecule

The POTENTIAL of metallic ELECTRODE INCREASES with increase in concentration of metal ions
The potential of metallic electrode decreases with increase in concentration of metal ions
The potential of non-metallic electrode increases with increase in concentration of non-metalions
The potential of non-metallic electrode decreases with increase in concentration of non-metal ions

`H_(2)O_(2),O_(2)F_(2),OF_(2)` are polar COMPOUND
`d_(O-O)` of `H_(2)O_(2) GT d_(O-O) ` of `O_(2)F_(2)`
`d_(O-F) ` of `OF_(2) gt d_(O-F) ` of `O_(2)F_(2)`

X is a reducing SUGAR and Y is a non-reducing sugar
X is a non-reducing sugar and Y is a reducing sugar
The glucosidic LINKAGE in X and Y are `ALPHA` and `beta` respectively.
The glucosidic linkages in X and Y are `beta` and `alpha`, respectively.

R is steamm VOLATILE
Q gives DARK violet colouration with 1% aqueous `FeCl_(3)` solution
S gives yellow precipitate with 2,4-dinitrophenylhydrazine
S gives dark violet colouration with 1% aqueous `FeCl_(3)` solution.

R' gives an aldol condensation reaction on heating with NaOH solution
The compound 'Q' gives a yellow precipitate in acetone
Step '4' is an AROMATIC NUCLEOPHILIC substitution reaction
The end product is a mixture of three compounds

the TOTAL NUMBER of stereoisomers possible for (X) is 6
the total number of diastereomers possible for (X) is 3
if the stereochemistry about the DOUBLE bond in (X) is TRANS, the number of enantiomers possible for (x) is 4.
if the stereochemistyr about the double bond in (X) is cis, the number of enantiomers possible for (X) is 2 .

the compound is optically active
the compound possesses centre of symmetry
the compoud possesses plane of symmetry
The compound possesses axis of symmetry.

`CR^(2+)` is a reducing agent
`Mn^(3+)` is an oxidizing agent
Both `Cr^(2+)` and `Mn^(3+)` exhibit `d^(4)` ELECTRONIC configuration
When `Cr^(2+)` is USED as a reducing agent, the chromium ion attains `d^(5)` electronic configuration

the chemisorption of `H_(2)` as H atoms on the SURFACE of GLASS is endothermic
PHYSICAL adsorption does not REQUIRE activation energy
chemisorption is always unimolecular
in adsorption, only solute from the solution is adsorbed on the surface of the SOLID adsorbent.

nickel is in the same OXIDATION STATE in both
both have tetrahedral geometry
both have SQUARE planar geometry
have tetrahedral and square planar geometry respectively

It gives a POSITIVE Tollens TEST and is a FUNCTIONAL isomer of X.
It gives a positive Tollens test and is a geometrical isomer of X.
It gives a positive iodoform test and is a functional isomer of X.
It gives a positive iodoform test and is a geometrical isomer of X.

Both `H_(2)^(+)` and `H_(2)^(-)` do not EXIST
`H_(2)^(-)` is more stable than `H_(2)^(+)`
`H_(2)^(+)` is more stable than `H_(2)^(-)`
Both `H_(2)^(+)` and `H_(2)^(-)` are equally stable

both `H_(2)^(+)` and `H_(2)^(-)` do not exist
`H_(2)^(-)` is more stabel than `H_(2)^(+)`
`H_(2)^(+)` is more stable than `H_(2)^(-)`
both `H_(2)^(+)` and `H_(2)^(-)` are equally stable

The distance between two octahedral voids of a cubic close packing of atoms with radius `r` is `2r`
The distance between two tetrahedral voids of a cubic close packing of atoms with radius `r` is `sqrt(6)xxr` at the body diagonal axes
The distance between tetrahedral and octehedral void is `sqrt(3/2)xxr`, where is the radius of ATOM FORMING the close packing
The distance between the surface of atoms `FCC` ARRANGEMENT ALONG an edge is `2(sqrt(2)-1)r`

The number of `CL = O` bonds in (II) and (iii) TOGETHER is two
The number of lone pairs of electrons on Cl in (ii) and (iii) together is three
The hybridization of Cl in (iv) is `sp^(2)`
Amongst (i) to (iv), the strongest acid is (i)

Formation of lead CHROMATE
Formation of chromyl chloridechromate
LIBERATION of chloride
Formation of REDDISH -brown vapours

generally the CALCINATION and roasting is done in Blast furnace
the SANDY and rocky material associated with ore are called matrix.
froath FLOATATION process is suitable for SULPHIDE ores.
Substance that reacts with ganue f to from fusible mass is called slag.

In metallurgy of iron, flux is a substance used to convert infusible impurities to fusible MASS.
Cryolite is `Na_(3)AIF_(6)` and is used in the electrolysis of alumina for lowering the melting point of alumina.
Combination of FeO with `SiO_(2)` must be avoided in metallurgy of copper.
Lead can be extracted by SELF REDUCTION of gelena.

the CONJUGATE base of `HClO_(4)` is weaker base than `H_(2)O`
the central atom in both `HClO_(4) and HClO` is `sp^(3)` hybridized
`HClO_(4)` is formed in the reaction between `Cl_(2) and H_(2)O`
`HClO_(4)` is more acidic than HClO because of the resonance stabilization of its ANION

(i) only
(i) and (II)
(ii) and (III)
All

O-O bond length are EQUAL
thermal decomposition of `O_(3)` is ENDOTHERMIC
`O_(3)` is diamagnetic in NATURE
`O_(3)` has a BENT structure

It is OPTICALLY active
It is dextrorotatory
It is optically inactive
None of these

Lower in energy than the starting materials
Involves both the nucleophile and leaving group
CLOSELY resembles a CARBONIUM ION intermediate
The carbon where substitution takes PLACE is `sp^3` hybridised

REACTION M is FASTER and less exothermic than reaction N
reaction M is slower and less exothermic than reaction N
reaction M is faster and more exothermic than reaction N
reaction M is slower and more exothermic than reaction N.

Reaction M is faster and LESS EXOTHERMIC than reaction N
Reaction M is SLOWER and less exothermic than reaction N
Reactioni M is faster and more exothermic than reaction N
Reaction M is slower and more exothermic than reaction N.

all three compounds are chiral
only I and II are chiral
I and III are diastereomers
only I and III are chiral.

all THREE COMPOUNDS are chiral
only I and II are chiral
I and II are diastereomers
only I and III are chiral

The STAGGERED conformation of ethane is less stable than ECLIPSED conformation, because staggered conformation has TORSIONAL strain
The eclipsed conformation of ethane is more stable than staggered conformation, because eclipsed conformation has not torsional strain
The eclipsed conformation of ethane is more stable than staggered conformation EVEN through the eclipsed conformation has torsional strain
The staggered conformation of ethane is more stable than eclipsed conformation, because staggered conformation has no tosional strain

arylamines are generally more basic than alkylamines because of aryl group
arylamines are generally more basic than alkylamines because the NITROGEN atom in arylamines is sp-hybridised
arylamines are generally LESS basic than alkylamines because the nitrogen lone-pair electrons are delocalised by INTERACTION with the aromatic ring `PI`-ELECTRON system
arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalisedby interaction with the aromatic ring `pi`-electron system.

ARYLAMINES are GENERALLY less basic than alkylamines because the nitrogen lone-pair ELECTRONS are delocalized by interaction with the AROMATIC ring `pi` electron system.
Arylamines are generally more basic thatn alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring `pi` electron system
Arylamines are generally more basic than alkylamines
Arylamines are generally more basic than alkylamines , because the nitrogen atom in arylamines is sp- HYBRIDIZED

Arylamines are generally more BASIC than alkylamines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring `pi`-electron system
Arylamines are generally more basic than alkylamines because of aryl group
Arylamines are generally more basic than alkyamines, because the nitrogen ATOM in arylamines is sp-hybridized
Arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalized by interaction with the aromatic ring `pi`-electron system.

the sugar COMPONENT in RNA is a arabinose and the sugar component in DNA is ribose
the sugar component in RNA is 2' -dexoyribose and the sugar component in DNA is arabinose
the sugar component in RNA is arabinose and the sugar component in DNA is 2' deoxyribose
ths sugar component in RNA is ribose and the sugar component in DNAIS 2' -deoxyribose.

the sugarcomopnentin RNAis an arabinoseand the sugar componemt in DNA is RIBOSE
the sugarcomponentin RNA is 2 - deoxyriboseand the sugarcomponentin DNAIS arabinose
the sugar componentin RNAis anarabinoseand thesugar componentin DNAis2 - deoxyribose
the sugarcomponent in RNAis ribose and the sugarcomponentin DNAis 2 - deoxyribose

The sugar component in RNA is RIBOSE and the sugar component in DNA is 2'-DEOXYRIBOSE.
The sugar component in RNA is arabinose and the sugar component in DNA is ribose.
The sugar component in RNA is 2'-deoxyribose and the sugar component in DNA is arabinose.
The sugar component in RNA is arabinose and the sugar component in DNA is 2- deoxyribose.