The rate of reaction A + B → Products, is given by the equation r = k[A] [B]. If B is taken in large excess, the order of reaction would be:
- ACannot be predicted
- B$0$
- C2
- ✓1
Answer: D.
View full solution →Question types
MODEL PAPER 5 question types
37 questions across 6 question groups — pick any mix to generate a Chemistry paper with step-by-step answer keys.
37
Questions
6
Question groups
5
Question types
01
M.C.Q [1M]
12 Q→02Assertion (A) & Reason (B) MCQ [1M]
4 Q→03Short Answer Type Questions [2M]
6 Q→043 Marks Question
8 Q→05Long Answer Type Questions [5M]
5 Q→064 Marks Questions
2 Q→Sample Questions
MODEL PAPER 5 questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
The unit of rate constant for a first order reaction is
- AMol/L
- BMol/L/s
- CMol²/L²/s²
- ✓s-1
Answer: D.
View full solution →Match the items of column I with appropriate entries of column II.
| Column I | Column II |
| (a) Non ideal solution with positive deviation | (i) $H _2 O (57 \%)+ HI (43 \%)$ |
| (b) Maximum boiling azeotrope | (ii) $CHCl _3+\left( CH _3\right)_2 CO$ |
| (c) Non ideal solution with negative deviation | (iii) $C _2 H _5 OH (95.4 \%)+ H _2 O (4.6 \%)$ |
| (d) Minimum boiling azeotrope | (iv) $CCl _4+ C _6 H _5 CH _3$ |
- ✓(a) (iv), (b) - (i), (c) - (ii), (d) - (iii)
- B(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
- C(a) (i), (b) - (ii), (c) - (iii), (d) - (iv)
- D(a) - (ii), (b) - (iii), (c) - (i), (d) - (iv)
Answer: A.
View full solution →An organic compound containing oxygen, upon oxidation forms a carboxylic acid as the only organic product with its molecular mass higher by 14 units. The organic compound is ___________ .
- Aa ketone
- ✓a primary alcohol
- Can aldehyde
- Da secondary alcohol
Answer: B.
View full solution →Williamson synthesis is used to obtain:
- ✓Ether
- BPrimary alcohol
- CAldehyde
- DKetone
Answer: A.
View full solution →Assertion (A): With excess of HI, glycerol ultimately gives isopropyl iodide.
Reason (R): The reaction occurs through intermediate formation of allyl iodide and propylene.
Reason (R): The reaction occurs through intermediate formation of allyl iodide and propylene.
- ✓Both A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- DA is false but R is true
Answer: A.
View full solution →Assertion (A): Vinyl halides do not give nucleophilic substitution reaction.
Reason (R): Vinyl group is electron donating in vinyl halides.
Reason (R): Vinyl group is electron donating in vinyl halides.
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- ✓A is true but R is false.
- DA is false but R is true.
Answer: C.
View full solution →Assertion (A): Reactivity of ketones is more than aldehydes.
Reason (R): The carbonyl carbon of ketones is less electrophilic as compared to aldehydes.
Reason (R): The carbonyl carbon of ketones is less electrophilic as compared to aldehydes.
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- CA is true but R is false.
- ✓A is false but R is true.
Answer: D.
View full solution →Assertion (A): D-glucose and D-mannose form same osazone with phenylhydrazine.
Reason (R): Osazone formation involves only the last four carbon atoms.
Reason (R): Osazone formation involves only the last four carbon atoms.
- ABoth A and R are true and R is the correct explanation of A.
- BBoth A and R are true but R is not the correct explanation of A.
- ✓A is true but R is false.
- DA is false but R is true.
Answer: C.
View full solution →What is meant by the Ketal? Give an example.
Sodium chloride or calcium chloride is used to clear snow from the roads. Why?
Answer the following:
(a) Define rate of reaction?
(b) For a reaction the rate law expression is represented as follows:
Rate $=k[A][B]^{\frac{1}{2}}$
i. Interpret whether the reaction is elementary or complex. Give reason to support your answer.
ii. Write the unit of rate constant for this reaction if concentration of A and B is expressed in moles/L
View full solution →(a) Define rate of reaction?
(b) For a reaction the rate law expression is represented as follows:
Rate $=k[A][B]^{\frac{1}{2}}$
i. Interpret whether the reaction is elementary or complex. Give reason to support your answer.
ii. Write the unit of rate constant for this reaction if concentration of A and B is expressed in moles/L
Write the IUPAC name and draw the structure of coordination entities of [PtCl(NH3)5]Cl3.
Give an explanation for the catalytic properties shown by transition metals.
i. Determine the units of rate constant for first and zero order reaction.
ii. Show that time required for the completion of 99% of the first order reaction is twice the 90% of completion of the reaction.
ii. Show that time required for the completion of 99% of the first order reaction is twice the 90% of completion of the reaction.
Tert-Butylbromide reacts with aq. NaOH by SN1 mechanism while n-butylbromide reacts by SN2 mechanism. Why?
Write the mechanism of acid dehydration of ethanol to yield ethane.
Calculate the emf of the cell
$Mg ( s )\left| Mg ^{+2}(0.1 M )\right| \mid Cu ^{+2}\left(1 \times 10^{-3} M \mid Cu ( s )\right)$
Given, $\left.E _{C u^{2+} / C u}^{\ominus}=+0.34 V, E _{M g^{+2} / M g}^{\ominus}=-2.37 V\right)$
View full solution →$Mg ( s )\left| Mg ^{+2}(0.1 M )\right| \mid Cu ^{+2}\left(1 \times 10^{-3} M \mid Cu ( s )\right)$
Given, $\left.E _{C u^{2+} / C u}^{\ominus}=+0.34 V, E _{M g^{+2} / M g}^{\ominus}=-2.37 V\right)$
Write the Nernst equation and calculate emf of the following cell at 298 K:
$\begin{array}{l} Cr \left| Cr ^{3+}(0 \cdot 1 M ) \| Fe ^{2+}(0 \cdot 01 M )\right| Fe \\ \text { Given : } E _{ Cr ^{3+} / Cr }^{\ominus}=-0 \cdot 75 V \\ E _{ Fe ^{2+} / Fe }^{\ominus}=-0 \cdot 45 V \\ (\log 10=1)\end{array}$
View full solution →$\begin{array}{l} Cr \left| Cr ^{3+}(0 \cdot 1 M ) \| Fe ^{2+}(0 \cdot 01 M )\right| Fe \\ \text { Given : } E _{ Cr ^{3+} / Cr }^{\ominus}=-0 \cdot 75 V \\ E _{ Fe ^{2+} / Fe }^{\ominus}=-0 \cdot 45 V \\ (\log 10=1)\end{array}$
Arrange the following compounds in a decreasing order of basic strength in their aqueous solutions.
NH3, CH3NH2, (CH3)2NH, (CH3)3N
NH3, CH3NH2, (CH3)2NH, (CH3)3N
Write the formulas for the following coordination compounds:
a. Tetraammineaquachloridocobalt(III) chloride
b. Potassium tetrahydroxidozincate(II)
c. Potassium trioxalatoaluminate(III)
d. Dichloridobis(ethane-1, 2-diamine)cobalt(III)
e. Tetracarbonylnickel(0)
a. Tetraammineaquachloridocobalt(III) chloride
b. Potassium tetrahydroxidozincate(II)
c. Potassium trioxalatoaluminate(III)
d. Dichloridobis(ethane-1, 2-diamine)cobalt(III)
e. Tetracarbonylnickel(0)
Attempt any five of the following:
(a) Name the enzyme which convert surcrose into glucose and fructose.
(b) i. Name any two bases which are common to both DNA and RNA.
ii. Which vitamin deficiency causes:
1. Bone deformities in children?
2. Pernicious anaemia?
(c) What are heterocyclic bases?
(d) Write the name of linkage joining two monosaccharides.
(e) Name the purines present in DNA.
(f) Give an example of fibrous protein.
(g) Of the two bases named below, which one is present in RNA and which one is present in DNA?
i. Thymine
ii. Uracil
(a) Name the enzyme which convert surcrose into glucose and fructose.
(b) i. Name any two bases which are common to both DNA and RNA.
ii. Which vitamin deficiency causes:
1. Bone deformities in children?
2. Pernicious anaemia?
(c) What are heterocyclic bases?
(d) Write the name of linkage joining two monosaccharides.
(e) Name the purines present in DNA.
(f) Give an example of fibrous protein.
(g) Of the two bases named below, which one is present in RNA and which one is present in DNA?
i. Thymine
ii. Uracil
Give the oxidation state, d-orbital occupation and coordination number of the central metal ion in the following
complexes:
i. $K_3\left[ Co \left( C _2 O _4\right)_3\right]$
ii. cis- $\left[ Cr (e n)_2 Cl _2\right] Cl$
iii. $\left( NH _4\right)_2\left[ CoF _4\right]$
iv. $\left[ Mn \left( H _2 O \right)_6\right] SO _4$
View full solution →i. $K_3\left[ Co \left( C _2 O _4\right)_3\right]$
ii. cis- $\left[ Cr (e n)_2 Cl _2\right] Cl$
iii. $\left( NH _4\right)_2\left[ CoF _4\right]$
iv. $\left[ Mn \left( H _2 O \right)_6\right] SO _4$
i. Write structures of different isomeric amines corresponding to the molecular formula, C4H11N.
ii. Write IUPAC names of all the isomers.
iii. What type of isomerism is exhibited by different pairs of amines?
ii. Write IUPAC names of all the isomers.
iii. What type of isomerism is exhibited by different pairs of amines?
The colligative properties of electrolytes require a slightly different approach than the one used for the colligative properties of non-electrolytes. The electrolytes dissociate into ions in solution. It is the number of solute particles that determines the colligative properties of a solution. The electron solutions, therefore, show abnormal colligative properties. To account for this effect we define a quantity called the van't Hoft factor, given
by
$
\begin{array}{l}
i=\frac{\text { Actual number of particles in solution a fter dissociation }}{\text { Number of formula units initially dissolved in solution }} \\
i=1 \text { (for non-electrolytes); } \\
i>1 \text { (for electrolytes, undergoing dissociation) } \\
i<1 \text { (for solutes, undergoing association). }
\end{array}
$
i. $0.1 M K _4\left[ Fe ( CN )_6\right]$ is $60 \%$ ionized. What will be its van't Hoff factor?
ii. When a solution of benzoic acid dissolved in benzene such that it undergoes in molecular association and its molar mass approaches 244. In which form Benzoic molecules will exist?
iii. How does van't Hoff factor $i$ and degree of association a are related if benzoic acid undergoes dimerisation in benzene solution? $\left( i =1 \frac{-\alpha}{2}\right.$ or $\left.i =1+\alpha\right)(2)$
OR
iii. What do you mean by colligative properties of solutions?
View full solution →by
$
\begin{array}{l}
i=\frac{\text { Actual number of particles in solution a fter dissociation }}{\text { Number of formula units initially dissolved in solution }} \\
i=1 \text { (for non-electrolytes); } \\
i>1 \text { (for electrolytes, undergoing dissociation) } \\
i<1 \text { (for solutes, undergoing association). }
\end{array}
$
i. $0.1 M K _4\left[ Fe ( CN )_6\right]$ is $60 \%$ ionized. What will be its van't Hoff factor?
ii. When a solution of benzoic acid dissolved in benzene such that it undergoes in molecular association and its molar mass approaches 244. In which form Benzoic molecules will exist?
iii. How does van't Hoff factor $i$ and degree of association a are related if benzoic acid undergoes dimerisation in benzene solution? $\left( i =1 \frac{-\alpha}{2}\right.$ or $\left.i =1+\alpha\right)(2)$
OR
iii. What do you mean by colligative properties of solutions?
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