Chemistry Topic-Wise Test - 6 | 45 Questions MCQ Test

QUESTION: 1

The oxidation number of Cr is+ 6 in

Solution:

QUESTION: 2

The oxidation number of carbon is+ 3 in

A. HCHO
B.
C.
D.

Solution:

QUESTION: 3

Suppose a compound contains atoms A,B and C. The oxidation number of A is+ 2, B is+ 5 and C is –2.The possible formula of the cmpound would be

Solution:

QUESTION: 4

The oxidation number of phosphorus in its compounds varies from

A. –3 to+5
B. –1 to +1
C. –3 to –5
D. –5 to +1

Solution:

QUESTION: 5

The rducing agent used in Thermit process is

A.
B. Mg
C. Al
D.

Solution:

QUESTION: 6

For the redox reaction

A.
x = 1, y = 5
B.
x = 2, y = 10
C.
x = 1, y = 20
D.
x = 1, y = 15

Solution:

QUESTION: 7

The oxidation number of sulphur in

A. +7
B. +8
C. +4
D. +6

Solution:

QUESTION: 8

The oxidation number of sulphur in

A. +8
B. +6
C. +7
D. +4

Solution:

QUESTION: 9

A sample of 2.5 mol of hydrazine

loses 25 mol of electrons on being converted into a new compound X. Assuming that all of the nitrogen
appears in the new compound, what is the oxidation state of nitrogen in compound X?

A. -1
B. -2
C. +3
D. +4

Solution:

QUESTION: 10

The equivalent weight of nitrogen in the reaction

A. 28
B. 2.8
C. 14
D. 1.4

Solution:

QUESTION: 11

Which of the following ions will undergo disproportionation reaction?

A.
B.
C.
D.
none of these

Solution:

QUESTION: 12

is a good oxidizing agent in different media where it changes to

The oxidatino number of Mn correspondingly reduces by

A. –1,–3,–4,–5
B. –5,–4,–3,–2
C. –5,–1,–3,–4
D. –2,–6,–4,–3

Solution:

QUESTION: 13

Coordination theory was forumulated by

A. Kasimir Fajan
B. A Wojcicki
C. Alfred Werner
D. C K Jorgensen

Solution:

QUESTION: 14

Which of the following is a double salt ?

A. Alum
B. Chrome alum
C. Microcosmic salt
D. All of these

Solution:

QUESTION: 15

The IUPAC name of the complex compound

A. lithium aluminium hydride
B. hydrido-aluminiumlithium (III)
C. lithium tetrahydridoaluminate (III)
D. lithium tetrahydridoaluminate (I)

Solution:

QUESTION: 16

The IUPAC name for

A. pentahydroaluminium hydroxide
B. aquometaaluminate ion
C. pentaaquaaliuminate(III) hydroxide
D. pentaaquahydroxoaluminium (III)

Solution:

QUESTION: 17

The IUPAC name for the coordination compound

A. ferrocene
B. bis(cyclopentadienyl) iron(II)
C. dicyclopentadienyliron(0)
D. bis(cyclopentyl) iron(II)

Solution:

QUESTION: 18

Which of the following complex compounds exhibts cis-trans isomerism ?

A.
B.
C.
D. All of these

Solution:

QUESTION: 19

The hyridization states of the central atom in the complex ions are

and

are

A.
B.
C.
D. none of these

Solution:

QUESTION: 20

Which of the following statements is correct ?

A. The ion has a tetrahedral geometry and is diamagnetic
B. The ion has a square planar geometry and is paramagnetic
C. The ion has a square planar geometry and is diamagnetic
D. The ion has a tetrahedral geometry and is diamagnetic

Solution:

QUESTION: 21

Consider the following spatial arrangements of the octahedral complex ion

Which of the following statement is incorrect regarding these stuructures ?

A. I and II enantiomers
B. II and III are cis and trans isomers respectively
C. III and IV are trans and cis isomers respectively
D. II and IV have identical strucutres

Solution:

QUESTION: 22

Which of the following statements is correct regarding the chirality (optical isomerism )of the cis and trans isomers of the type

(M stands for
a metal, a and b are achiral ligands and aa is a bidentate ligand) ?

A. The trans form is achiral and optically inactive whilethe cis form is chiral and exists in two enantiomeric forms
B. Both the cis and trans forms are achiral and optically inactive
C. The trans form is chiral and exists in two enantiomeric forms while the cis form is achiral and optically inactive
D. Both the cis and trans forms are chiral, and each exists in two enantiomeric forms

Solution:

QUESTION: 23

Which of the following mixtures is known as Ziegler–Natta cAtalyst ?

Solution:

QUESTION: 24

One mole of the complex compound

gives 3 moles of ions on dissolution in water. One mole of the same complex reacts with two moles of AgNO3 solution to yield two moles of AgCl(s). The structure of the complex is