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Page 1
JAM 2022 CHEMISTRY - CY
CY 2/40
Section A: Q.1 – Q.10 Carry ONE mark each.
Q.1 The reagent required for the following transformation
is
(A) NaBH
4
(B) LiAlH
4
(C) H
3
B·THF
(D) Zn(Hg)/HCl
Page 2
JAM 2022 CHEMISTRY - CY
CY 2/40
Section A: Q.1 – Q.10 Carry ONE mark each.
Q.1 The reagent required for the following transformation
is
(A) NaBH
4
(B) LiAlH
4
(C) H
3
B·THF
(D) Zn(Hg)/HCl
JAM 2022 CHEMISTRY - CY
CY 3/40
Q.2 The major product formed in the following reaction
is
(A)
(B)
(C)
(D)
Page 3
JAM 2022 CHEMISTRY - CY
CY 2/40
Section A: Q.1 – Q.10 Carry ONE mark each.
Q.1 The reagent required for the following transformation
is
(A) NaBH
4
(B) LiAlH
4
(C) H
3
B·THF
(D) Zn(Hg)/HCl
JAM 2022 CHEMISTRY - CY
CY 3/40
Q.2 The major product formed in the following reaction
is
(A)
(B)
(C)
(D)
JAM 2022 CHEMISTRY - CY
CY 4/40
Q.3 The major product formed in the following reaction
is
(A)
(B)
(C)
(D)
Page 4
JAM 2022 CHEMISTRY - CY
CY 2/40
Section A: Q.1 – Q.10 Carry ONE mark each.
Q.1 The reagent required for the following transformation
is
(A) NaBH
4
(B) LiAlH
4
(C) H
3
B·THF
(D) Zn(Hg)/HCl
JAM 2022 CHEMISTRY - CY
CY 3/40
Q.2 The major product formed in the following reaction
is
(A)
(B)
(C)
(D)
JAM 2022 CHEMISTRY - CY
CY 4/40
Q.3 The major product formed in the following reaction
is
(A)
(B)
(C)
(D)
JAM 2022 CHEMISTRY - CY
CY 5/40
Q.4 The major product formed in the following reaction
K + O
2
?
is
(A) K
2
O
(B) K
2
O
2
(C) KO
2
(D) K
2
O
3
Page 5
JAM 2022 CHEMISTRY - CY
CY 2/40
Section A: Q.1 – Q.10 Carry ONE mark each.
Q.1 The reagent required for the following transformation
is
(A) NaBH
4
(B) LiAlH
4
(C) H
3
B·THF
(D) Zn(Hg)/HCl
JAM 2022 CHEMISTRY - CY
CY 3/40
Q.2 The major product formed in the following reaction
is
(A)
(B)
(C)
(D)
JAM 2022 CHEMISTRY - CY
CY 4/40
Q.3 The major product formed in the following reaction
is
(A)
(B)
(C)
(D)
JAM 2022 CHEMISTRY - CY
CY 5/40
Q.4 The major product formed in the following reaction
K + O
2
?
is
(A) K
2
O
(B) K
2
O
2
(C) KO
2
(D) K
2
O
3
JAM 2022 CHEMISTRY - CY
CY 6/40
Q.5 Which one of the following options is best suited for effecting the
transformation?
(A) MnO
2
(B) DMSO, (COCl)
2
, Et
3
N
(C) Al(Oi-Pr)
3
(D) Ag
2
O/NH
4
OH
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FAQs on Chemistry - 2022 Past Year Paper - IIT JAM Chemistry Past Year Papers
| 1. What are the properties of acids and bases? |  |
Ans. Acids are substances that ionize in water to produce hydrogen ions (H+), while bases are substances that ionize in water to produce hydroxide ions (OH-). Acids have a sour taste, turn blue litmus paper red, and have a pH less than 7. Bases, on the other hand, have a bitter taste, turn red litmus paper blue, and have a pH greater than 7.
| 2. How are acids and bases classified? | |
Ans. Acids and bases can be classified based on their strength and concentration. Acids can be categorized as strong acids (completely ionize in water), weak acids (partially ionize in water), or superacids (exceptionally strong acids). Bases can be classified as strong bases (completely dissociate in water), weak bases (partially dissociate in water), or amphoteric bases (can act as both acids and bases).
| 3. What is the difference between a chemical reaction and a physical change? | |
Ans. A chemical reaction involves a change in the chemical composition and rearrangement of atoms, resulting in the formation of new substances. Physical changes, on the other hand, only affect the physical properties of a substance without altering its chemical composition. Examples of physical changes include changes in state (solid to liquid), changes in shape or size, and changes in density.
| 4. How do you calculate the molar mass of a compound? | |
Ans. To calculate the molar mass of a compound, you need to determine the atomic masses of all the elements present in the compound. This can be done by referring to the periodic table. Multiply the atomic mass of each element by the number of atoms of that element in the compound, and then sum up the masses of all the elements. The resulting sum is the molar mass of the compound, expressed in grams per mole (g/mol).
| 5. What is the significance of balancing chemical equations? | |
Ans. Balancing chemical equations is essential to ensure that the law of conservation of mass is obeyed. According to this law, matter cannot be created or destroyed in a chemical reaction, only rearranged. By balancing the equation, the number of atoms of each element is equal on both sides of the equation, indicating that the same amount of each element is involved in the reaction. It helps in understanding the stoichiometry of the reaction and predicting the quantities of reactants and products.
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