Chemistry Test

Result

Chemistry Test - 4

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

The packing efficiency of the two-dimensional square unit cell shown below is

A

78.54%

B

68.02%

C

74.05%

D

39.27%
Question 2
1 / -0

Which one of the following can be oxidised to the corresponding carbonyl compound:

A

2-hydroxy propane

B

2-methyl-2-hydroxy propane

C

Phenol

D

o-Nitrophenol
Question 3
1 / -0

The correct statement(s) about the following sugars X and Y is(are)

A

X is a non-reducing sugar and Y is a reducing sugar

B

X is a reducing sugar and Y is a non-reducing sugar

C

The glucosidic linkages in X and Y are β and α, respectively

D

All of these
Question 4
1 / -0

A

Option (C & D)

B

Option C

C

Option D

D

Option A
Question 5
1 / -0

The spin only magnetic moment value (in Bohr magneton units) of Cr(CO)6 is

A

0

B

4.90

C

2.84

D

5.92
Question 6
1 / -0

Electrophile is:

A

\( H _{2} O\)

B

\(NH _{3}\)

C

\( AlCl _{3}\)

D

\(C _{2} H _{5} NH _{2}\)

Solution

In chemistry, an electrophile (literally electron lover) is a reagent attracted to electrons. Electrophiles are
positively charged or neutral species having vacant orbitals that are attracted to an electron rich centre. It
participates in a chemical reaction by accepting an electron pair in order to bond to a nucleophile. Because
electrophiles accept electrons, they are Lewis acids (see acid-base reaction theories). Most electrophiles are
positively charged, have an atom that carries a partial positive charge, or have an atom that does not have
an octet of electrons.
In AlCl ALuminium has vacant p orbital so it can accept electron to fill it's octet completely.
Hence, option C is correct
Question 7
1 / -0

Total number of geometrical isomers for the complex [RhCl(CO)(PPh3)(NH3)] is

A

3

B

2

C

1

D

4
Question 8
1 / -0

Find each of the compounds given in the figure with the reaction(s), that they can undergo given in options :

A

All of these

B

Dehydrogenation

C

Elimination

D

Nucleophilic substitution
Question 9
1 / -0

The oxidation number of Mn in the product of alkaline oxidative fusion of MnO2 is

A

6

B

5

C

4

D

7
Question 10
1 / -0

The coordination number of Al in the crystalline state of AlCl3 is

A

6

B

7

C

8

D

5