Explore topic-wise InterviewSolutions in Current Affairs.

This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

1.

Number of sp^(2)-sp sigma bonds in the given compound is

Answer»

1
2
3
4

Solution :
Discussion
2.

The no. of spherical nodes in a 4s orbital is

Answer»

Zero
1
2
3

Answer :D
Discussion
3.

Number of six membered cyclic conjugated dieņes possible for C_(6)H_(8) is

Answer»


SOLUTION :
Discussion
4.

Number of significant figures in 78.000 g, 0.0206 g and 3.002 g respectively are

Answer»

3,4 and 5
2,5 and 4
3,3 and 4
5,3 and 4

Solution :d)
Discussion
5.

Number of significant figures in 5 are?

Answer»

1
2
INFINITE
Zero

Answer :C
Discussion
6.

Number of significant figures in 5.00?

Answer»

2
3
1
Zero

Answer :B
Discussion
7.

Number of sigma sp^2 - sp^(2) bonds present in a molecule of X in the process C_6H_6 overset(H_2 //"Ni") rarrX is

Answer»

6
3
12
Zero

Answer :D
Discussion
8.

Number of sigma bonds in ethane formed by the overlap of sp^(3) and s orbital is

Answer»

5
6
7
4

Answer :B
Discussion
9.

Number of short periods in the long form of periodic table

Answer»

3
2
4
6

Answer :A
Discussion
10.

Number of series which constitute d-block of periodic table is ........

Answer»


ANSWER :B
Discussion
11.

Number of reaction which give alcohol as product.

Answer»


ANSWER :3
Discussion
12.

The number of radial nodes for a 3p orbital is

Answer»

0
1
2
3

Answer :B
Discussion
13.

Number of protons in the nucleus of carbon atom is

Answer»

7
8
4
6

Answer :D
Discussion
14.

Number of primary, secondary, tertiary and neo carbons in the following compound respectively are CH_(3) - CH_(2) - overset(overset(CH_(3))(|))(CH) - underset(underset(CH_(3))(|))overset(overset(CH_(3))(|))(C ) - CH_(3)

Answer»

4,2,1,1
5,1,1,1
3,2,2,1
5,0,2,1

Answer :B
Discussion
15.

Number of primary hydrogens in isobutane is

Answer»


SOLUTION :`CH_3 - OVERSET(CH_3)overset(|)CH-CH_3`
Discussion
16.

Number of possible spectral lines which may be emitted in Brackett series in H atom, if electrons present in 9^(th) excited level returns to ground level, are

Answer»

21
6
45
5

Solution :No. of Spectral lines= `SUM DELTA N`
`sum 10-1 = 9 +8+7 + 6 + 5 + 4 +3+2 + 1`
No of lines in BRACKETT series = 6
Discussion
17.

Number of possible resonance structures of

Answer»


SOLUTION :
Discussion
18.

Number of possible position isomers for dichlorobenzene is

Answer»

2
3
4
5

Answer :B
Discussion
19.

Number of possible optically active isomers

Answer»


Solution :Eight POSSIBLE OPTICALLY active ISOMERS.
Discussion
20.

Number of possible geometrical isomers for 1, 3-pentadiene is

Answer»

8
4
3
2

Answer :D
Discussion
21.

Number of possible geometrical isomers for 2, 4 - hexadjenie is

Answer»

8
4
3
2

Solution :2,4- hexadiene has TWO double BONDS. Number of POSSIBLE GEOMETRICAL ISOMERS are `2^2 = 4`
Discussion
22.

Number of possible alkynes with formula C_5H_8 is

Answer»

3
5
2
4

Solution :`C_5H_8` has the FOLLOWING THREE ISOMERS :
(i)`CH_3CH_2CH_2C-=CH` , (II)`CH_3CH_2C-=C CH_3`, (III)`(CH_3)_2CH-C-=CH`
Discussion
23.

Number of positional isomers of the compound 2-Bromo Bicyclo [2,2,1] Heptane(including the given one

Answer»

2
4
5
3

Solution :
Discussion
24.

Number of positional isomers possible for methyloctane

Answer»


SOLUTION :`C-UNDERSET( C )underset(|)C-C-C-C-C-C-C`
`C-C-underset( C )underset(|)C-C-C-C-C-C`
`C-C-C-underset( C )underset(|)C-C-C-C-C`
Discussion
25.

Number of pi electrons in resonance in the following structure is.

Answer»


ANSWER :8
Discussion
26.

Number of pi bonds and sigma bonds in the following structure is

Answer»

6,19
4,20
5,19
5, 20

Solution :5, 19
In the given compound will have the correctstructure as
There 5 `pi`-bonds and 8 C - H + 11C - C `SIGMA`-bonds.
So, 19 `sigma`-bonds are present in the above MOLECULE.
Discussion
27.

Number of per oxide bonds in per xenate ion[XeO_(6)]^(4-) is :

Answer»


SOLUTION :OXIDATION no. of XE in `[XeO_6]^(4-)`is `+8`
Discussion
28.

Number of periods present in the long form of periodic table

Answer»
Discussion
29.

Number of oxides possible for carbon at normal conditions is

Answer»


ANSWER :3
Discussion
30.

Number of oxidation states that the most electronegative element can exhibit is its compounds with other elements

Answer»

9
5
4
1

Answer :D
Discussion
31.

Number of outer shells partially filled for representative elements

Answer»

ZERO 
ONE 
TWO 
Three 

Answer :B
Discussion
32.

Number of orbitals of their other most orbits are more than 4.

Answer»

SOLUTION :Because, NUMBER of ORBITALS of their OUTER most 9 orbits are more then 4. (1-3, 3-3p, 5-3d)
Discussion
33.

Number of organic products formed in following feaction. H-underset(O)underset(||)C-overset(O)overset(||)C-underset(O)underset(||)C-H underset("excess")overset(NH_(2)-NH_(2))rarr

Answer»


SOLUTION :
Discussion
34.

Number of orbitals in h sub-shell is

Answer»

<P>11
15
17
19

Solution :`{:(s,p,d,F,g,h),(l=0,1,2,3,4,5):}`
Number of orbitals = 5 X 2 +1 =11
Discussion
35.

Number of optically active isomers of

Answer»


SOLUTION :N//A
Discussion
36.

Number of nodes in above plot is:

Answer»


Solution :Therefore is only one NODE in the plot. Node is POINT at which RADIAL prabability FUNCTION CHANGES from -veto + ve .
Discussion
37.

Number of nodes in above plot is :

Answer»

1
2
3
4

Answer :A
Discussion
38.

Number of nodes spaces in 4s orbital is

Answer»

0
1
3
4

Solution :NODES = N -l-1
Discussion
39.

Number of nodal centres for 2s orbital

Answer»

1
0
4
3

Solution :NUMBER of NODAL CENTRE for 2S ORBITALS (n-1)=2-1=1
Discussion
40.

Number of nodal planes that a p-orbital has

Answer»

0
1
2
3

Answer :B
Discussion
41.

Number of N_(2) molecules present in 1 litre of vessel at 1 atm, 273K when compressibility factor is 1.2.

Answer»

`2.23xx10^(24)`
`2.23xx10^(22)`
`2.7xx10^(22)`
`2.7xx10^(24)`

ANSWER :B
Discussion
42.

Number of monochloro structural isomers of :

Answer»


ANSWER :(i) 6; (II) 4
Discussion
43.

Number of monochloro benzenes is

Answer»

1
3
5
6

Answer :A
Discussion
44.

Number of moles of water required for the hydroysis of 1 mole of Be_(2)C

Answer»


Solution :`Be_(2)C _+ 2H_(2)O rarr CH_(4) + 2BeO` tow moles of `H_(2)O` REQUIRED for the hydrolysis of `Be_(2)C`
Discussion
45.

Number of moles of valency electrons present in 6.022xx10^(23)NH_(4)^(+) ions is__________.

Answer»


Solution :`6XX10^(23)` IONS implies 1 mole of ions
1 ION `rarr8` valency `E^(-)`
1 mole of ions `rarr8` moles of valency `e^(-)`
Discussion
46.

Number of moles of the solute dissolved per dm^(3) of solution is ………………

Answer»

SOLUTION :MOLARITY
Discussion
47.

Number of moles of ozone used for one mole of the given unsaturated hydrocarbons ?

Answer»

1
2
3
4

Answer :C
Discussion
48.

Number of moles of oxygen required for thecombustion of hexyne and toluene respectively are

Answer»

8 and 9
`17/2 and 8`
`17/2 and 9`
`9 and 17/2`

ANSWER :C
Discussion
49.

Number of moles of OH^(-) produced by dissolving 1 mole of B(OH)_(3) in water ?

Answer»


Solution :`B(OH)_(3)OVERSET(H_(2)O)rarr [B(OH)_(4)]^(-)+H^(+)`
Discussion
50.

Number of moles of MnO_(4)^(-) required to oxidize one mole of ferrous oxalate completely in acidic medium will be

Answer»

7.5 moles
0.2 moles
0.6 moles
0.4 moles

Solution :`MnO_(4)^(-)+8H^(+)+5e^(-)(rarrMltn^(2+))+4H_(2)O`
`FeC_(2)O_(4)rarrFe^(2+)+C_(2)O_(4)^(23-)`
`Fe^(2+)rarrFe^(3+)+e^(-)`
`C_(2)O_(4)^(2-)rarr2CO_(2)+2e^(-)`
since one mole of `FeC_(2)O_(4)` loses 3 moles of electrons while one mole of `KMnO_(4)` accepts five moles of electrons THEREFORE NUMBER of moles of `KMnO_(4)` required to oxidised one mole of `FeC_(21)O_(4)=3//5 =0.6` mole
Discussion