Chemistry Test

Question 1
1 / -0

Following reactions are taking place in a Galvanic cell,

\(Z n \rightarrow Z n^{2+}+2 e^{-} ; A g^{+}+e^{-} \rightarrow A g\)

Which of the given representations is the correct method of depicting the cell?

A

\(Z n_{(s)}|Z n_{(a q)}^{2+} \| A g_{(a q)}^{+}| A g_{(s)}\)

B

\(Z n^{2+}|Z n \| A g| A g^{+}\)

C

\(Z n_{(a q)}|Z n_{(s)}^{2+} \| A g_{(s)}^{+}| A g_{(a q)}\)

D

\(Z n_{(s)}|A g_{(a q)}^{+} \| Z n_{(a q)}^{2+}| A g_{(s)}\)

Question 2
1 / -0

The ions \(\mathrm{Mg}^{+2}\) and \(\mathrm{PO}_{4}^{-3}\) combine to form compounds:

A
\(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)

B
\(\mathrm{Mg}_{2}\left(\mathrm{PO}_{4}\right)_{2}\)

C
\(\mathrm{Mg}_{2}\left(\mathrm{PO}_{4}\right)_{3}\)

D
\(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{3}\)

Question 3
1 / -0

Molecules: General formula. (n represents the number of carbon atoms in chain)

1. Aldehydes: \(C _{ n } H _{2 n } O\)

2. Carboxylic acids: \(C _{ n } H _{2 n } O _{2}\)

3. Cycloalkanes: \(C _{ n } H _{2 n }\)

4. Alkanes: \(C _{ n } H _{2 n +2}\)

Which of the above matching is correct? Choose from the options given below:

A
1 and 2 only

B
1 and 4 only

C
1, 2 and 4 only

D
All are correct

Question 4
1 / -0

Which of the following oxidation state is common for all lanthanides?

A
+2

B
+3

C
+4

D
+5

Question 5
1 / -0

Calculate the 'spin only' magnetic moment of \({M}^{2+}{ }_{\text {(aq) }}\) ion \(({Z}=27 )\).

A
\(5 {~BM}\)

B
\(3 {~BM}\)

C
\(4 {~BM}\)

D
\(6 {~BM}\)

Question 6
1 / -0

Arrange the following sets of compounds in order of their increasing boiling points:

Pentan \(-1-\) ol, butan \(-1- ol\), butan \(-2- ol\), ethanol, propan - \(1- ol\), methanol

A
Methanol, ethanol, propan - \(1- ol\), butan - \(2- ol\), butan - \(1- ol\), pentan - \(1-ol\).

B
Propan - \(1-ol\), butan - \(2- ol\), butan - \(1-o l\), pentan - \(1- ol\), methanol, ethanol

C
Pentan - \(1-ol\), Methanol, ethanol, propan - \(1-ol\), butan - \(2- ol\), butan - \(1-ol\)

D
Butan - \(2-ol\), butan - \(1-ol\), pentan - \(1-0l\), methanol, ethanol, propan - \(1-ol\)

Question 7
1 / -0

\(C_{3}H_{9}N\) can have how many structural isomers?

A
2

B
3

C
4

D
5

Question 8
1 / -0

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : SN2 reaction of an optically active aryl halide with an aqueous solution of KOH always gives an alcohol with opposite sign of rotation.

Reason : SN2 reactions always proceed with inversion of configuration.

A
If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

B
If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

C
If the Assertion is correct but Reason is incorrect.

D
If both the Assertion and Reason are incorrect.

Question 9
1 / -0

Which of the following ligands form a chelate?

A
Acetate

B
Oxalate

C
Cyanide

D
Ammonia

Question 10

1 / -0

Match various processes in surface chemistry from List 1 with their definition from:

List 1	List 2
A. Dissipation	1. Weak Vanderwalls forces exist between adsorbent and adsorbate
B. Absorption	2. if the adsorbed gas or liquid leaves the surface
C. Sorption	3. If gas or liquid molecules are uniformly distributed through out the interior
D. Physisorption	4. If both absorption and adsorption will occur

Chemistry Test ...

Question 1

\(Z n_{(s)}|Z n_{(a q)}^{2+} \| A g_{(a q)}^{+}| A g_{(s)}\)

\(Z n^{2+}|Z n \| A g| A g^{+}\)

\(Z n_{(a q)}|Z n_{(s)}^{2+} \| A g_{(s)}^{+}| A g_{(a q)}\)

\(Z n_{(s)}|A g_{(a q)}^{+} \| Z n_{(a q)}^{2+}| A g_{(s)}\)

Question 2

\(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{2}\)

\(\mathrm{Mg}_{2}\left(\mathrm{PO}_{4}\right)_{2}\)

\(\mathrm{Mg}_{2}\left(\mathrm{PO}_{4}\right)_{3}\)

\(\mathrm{Mg}_{3}\left(\mathrm{PO}_{4}\right)_{3}\)

Question 3

1 and 2 only

1 and 4 only

1, 2 and 4 only

All are correct

Question 4

+2

+3

+4

+5

Question 5

\(5 {~BM}\)

\(3 {~BM}\)

\(4 {~BM}\)

\(6 {~BM}\)

Question 6

Methanol, ethanol, propan - \(1- ol\), butan - \(2- ol\), butan - \(1- ol\), pentan - \(1-ol\).

Propan - \(1-ol\), butan - \(2- ol\), butan - \(1-o l\), pentan - \(1- ol\), methanol, ethanol

Pentan - \(1-ol\), Methanol, ethanol, propan - \(1-ol\), butan - \(2- ol\), butan - \(1-ol\)

Butan - \(2-ol\), butan - \(1-ol\), pentan - \(1-0l\), methanol, ethanol, propan - \(1-ol\)

Question 7

2

3

4

5

Question 8

If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.

If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

If the Assertion is correct but Reason is incorrect.

If both the Assertion and Reason are incorrect.

Question 9

Acetate

Oxalate

Cyanide

Ammonia

Question 10

A-2, B-4, C-3, D-1

A-1, B-4, C-2, D-1

A-2, B-3, C-4, D-1

A-3, B-4, C-1, D-2

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