JEE Main Test 98

Result

JEE Main Test 98

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Weekly Quiz Competition

Question 1
4 / -1

Paramagnetism is exhibited due to which one of the following reason?

A
Presence of unpaired electrons

B
Presence of completely filled electronic subshell

C
By non-transition element

D
By elements with noble gas configuration

Solution

Paramagnetism is exhibited due to the presence of unpaired electrons in the species.
Question 2
4 / -1

Cerium (Z= 58) is an important member of the lanthanides. Which of the following statements about cerium is incorrect ?

A
The common oxidation states of cerium are + 3 and +4

B
The + 3 oxidation state of cerium is more stable than the + 4 oxidation state

C
The + 4 oxidation state of cerium is not known in solutions

D
Cerium (IV) acts as an oxidising agent

Solution

Cerium exhibits three oxidation states, +2, +3 and +4. But +2 state is rare observed in some organometallic complexes. Hence the common oxidation states of cerium are +3 and +4.
Question 3
4 / -1

The IUPAC name for the complex [Co(NO₂ )(NH₃ )₅]Cl₂ is

A
nitrito-N-pentamminecobalt (III) chloride

B
nitrito-N-pentamminecobalt (II) chloride

C
pentaamminenitrito-N-cobalt (II) chloride

D
pentaamminenitrito-N-cobalt (III) chloride

Solution

The IUPAC name of the complex [CO(NO)₂(NH₃)₅]Cl₂ is pentaamminenitrito – N – Cobalt(111) chloride.
Question 4
4 / -1

Identify C in the following reaction,

A
Benzamide

B
Benzoic acid

C
Chlorobenzene

D
Aniline

Solution
Question 5
4 / -1

A
1/x

B
x

C
x²

D
1/x²

Solution
Question 6
4 / -1

A
e

B
1/e

C
e²

D
e³

Solution
Question 7
4 / -1

Power alcohol is a mixture of

A
80% petrol + 20% ethanol + small quantity of benzene

B
80% ethanol + 20% benzene + small quantity of petrol

C
50% petrol + 50% ethanol + small quantity of benzene

D
80% petrol + 20% benzene + small quantity of ethanol

Solution

Ethanol is used to generate power, as an additive to motor fuel to act as fule for internalcobustion engine is called power alcohol, it has generally 80% of petrol and 20% of ethnol in the presence of small quantity of benzene.
Question 8
4 / -1

A

B

C

D

Solution
Question 9
4 / -1

If linear function f(x) and g(x) satisfy

A
f(x) = 3(x - 1)

B
f(x) = 3x - 5

C
g(x) = 3(x - 1)

D
g(x) = 3 + x

Solution
Question 10
4 / -1

The composition of malachite is

A
CuFeS₂

B
CuCO₃

C
CuCO₃ ∙ Cu(OH)₂

D
Cu(OH)₂

Solution

The chemical formula of malachite is Cu₂CO₃(OH)₂. Hence the composition is CuCO₃.Cu(OH)_2.