Q. Which of the following is a property of lanthanides?
-
A.
High density
-
B.
Low melting point
-
C.
Non-magnetic
-
D.
Colorless
Solution
Lanthanides are known for their high density and are typically metallic in nature.
Correct Answer: A — High density
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Q. Which of the following is a property of metals?
-
A.
Brittle
-
B.
Good conductors of heat
-
C.
Poor conductors of electricity
-
D.
Dull appearance
Solution
Metals are typically good conductors of heat and electricity and have a shiny appearance.
Correct Answer: B — Good conductors of heat
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Q. Which of the following is a property of noble gases?
-
A.
Highly reactive
-
B.
Colorless and odorless
-
C.
Form strong acids
-
D.
Good conductors of electricity
Solution
Noble gases are colorless and odorless under standard conditions.
Correct Answer: B — Colorless and odorless
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Q. Which of the following is a property of p-block metals?
-
A.
High density
-
B.
Low melting point
-
C.
Good electrical conductivity
-
D.
Brittle
Solution
P-block metals, such as Lead and Tin, are generally brittle.
Correct Answer: D — Brittle
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Q. Which of the following is a property of the p-block element carbon?
-
A.
Good conductor of electricity
-
B.
Forms strong ionic bonds
-
C.
Can form multiple bonds
-
D.
High density
Solution
Carbon can form multiple bonds, such as double and triple bonds, due to its tetravalency.
Correct Answer: C — Can form multiple bonds
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Q. Which of the following is a property of transition metals?
-
A.
They have completely filled d-orbitals
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B.
They form only ionic compounds
-
C.
They exhibit variable oxidation states
-
D.
They are all paramagnetic
Solution
Transition metals exhibit variable oxidation states due to the involvement of d-electrons in bonding.
Correct Answer: C — They exhibit variable oxidation states
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Q. Which of the following is a reducing agent for aldehydes?
-
A.
H2
-
B.
KMnO4
-
C.
Na2Cr2O7
-
D.
HCl
Solution
Hydrogen gas (H2) can act as a reducing agent for aldehydes, converting them to alcohols.
Correct Answer: A — H2
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Q. Which of the following is a reducing agent in the reaction 2CuO + C → 2Cu + CO2?
Solution
C is the reducing agent as it donates electrons to reduce CuO to Cu.
Correct Answer: B — C
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Q. Which of the following is a reducing agent that can reduce ketones?
-
A.
H2/Pd
-
B.
KMnO4
-
C.
Na2Cr2O7
-
D.
AgNO3
Solution
H2 in the presence of palladium (Pd) is a reducing agent that can reduce ketones to alcohols.
Correct Answer: A — H2/Pd
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Q. Which of the following is a reducing sugar?
-
A.
Fructose
-
B.
Sucrose
-
C.
Starch
-
D.
Cellulose
Solution
Fructose is a reducing sugar, while sucrose, starch, and cellulose are not.
Correct Answer: A — Fructose
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Q. Which of the following is a renewable energy source?
-
A.
Coal
-
B.
Natural Gas
-
C.
Solar Energy
-
D.
Nuclear Energy
Solution
Solar energy is a renewable energy source that can be harnessed without depleting natural resources.
Correct Answer: C — Solar Energy
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Q. Which of the following is a renewable source of energy that helps reduce environmental pollution?
-
A.
Coal
-
B.
Natural gas
-
C.
Solar energy
-
D.
Nuclear energy
Solution
Solar energy is a renewable source of energy that helps reduce environmental pollution compared to fossil fuels.
Correct Answer: C — Solar energy
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Q. Which of the following is a renewable source of energy?
-
A.
Coal
-
B.
Natural gas
-
C.
Solar energy
-
D.
Nuclear energy
Solution
Solar energy is a renewable source of energy that can be harnessed without depleting natural resources.
Correct Answer: C — Solar energy
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Q. Which of the following is a secondary alcohol?
-
A.
2-pentanol
-
B.
1-pentanol
-
C.
3-pentanol
-
D.
Cyclopentanol
Solution
2-pentanol has the hydroxyl group on the second carbon, making it a secondary alcohol.
Correct Answer: A — 2-pentanol
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Q. Which of the following is a secondary amine?
-
A.
Ethylamine
-
B.
Dimethylamine
-
C.
Methylamine
-
D.
Aniline
Solution
Dimethylamine is a secondary amine as it has two alkyl groups attached to the nitrogen.
Correct Answer: B — Dimethylamine
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Q. Which of the following is a side effect of excessive caffeine consumption?
-
A.
Drowsiness
-
B.
Increased alertness
-
C.
Insomnia
-
D.
Weight gain
Solution
Excessive caffeine can lead to insomnia and disrupt sleep patterns.
Correct Answer: C — Insomnia
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Q. Which of the following is a state function?
-
A.
Work
-
B.
Heat
-
C.
Enthalpy
-
D.
All of the above
Solution
Enthalpy is a state function, while work and heat are not state functions as they depend on the path taken.
Correct Answer: C — Enthalpy
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Q. Which of the following is a storage form of glucose in animals?
-
A.
Starch
-
B.
Cellulose
-
C.
Glycogen
-
D.
Chitin
Solution
Glycogen is the storage form of glucose in animals, while starch serves this role in plants.
Correct Answer: C — Glycogen
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Q. Which of the following is a strong +I effect group?
-
A.
-F
-
B.
-Cl
-
C.
-Br
-
D.
-CH3
Solution
The -CH3 group is a strong +I effect group as it donates electron density through the inductive effect.
Correct Answer: D — -CH3
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Q. Which of the following is a strong -M group?
-
A.
-OCH3
-
B.
-NO2
-
C.
-CH3
-
D.
-F
Solution
-NO2 is a strong -M group as it withdraws electron density through resonance.
Correct Answer: B — -NO2
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Q. Which of the following is a strong acid?
-
A.
HCl
-
B.
CH3COOH
-
C.
H2CO3
-
D.
NH3
Solution
HCl (hydrochloric acid) is a strong acid that completely dissociates in water.
Correct Answer: A — HCl
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Q. Which of the following is a strong base?
-
A.
NH4OH
-
B.
NaOH
-
C.
CH3COONa
-
D.
K2CO3
Solution
NaOH (sodium hydroxide) is a strong base that completely dissociates in solution.
Correct Answer: B — NaOH
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Q. Which of the following is a strong nucleophile?
-
A.
Water
-
B.
Ammonia
-
C.
Sodium chloride
-
D.
Hydrochloric acid
Solution
Ammonia (NH3) is a strong nucleophile due to the presence of a lone pair of electrons on the nitrogen atom.
Correct Answer: B — Ammonia
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Q. Which of the following is a structural polysaccharide?
-
A.
Starch
-
B.
Glycogen
-
C.
Cellulose
-
D.
Maltose
Solution
Cellulose is a structural polysaccharide found in the cell walls of plants.
Correct Answer: C — Cellulose
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Q. Which of the following is a terminal alkyne?
-
A.
1-butyne
-
B.
2-butyne
-
C.
1-pentyne
-
D.
3-pentyne
Solution
1-butyne is a terminal alkyne because it has a triple bond at the end of the carbon chain.
Correct Answer: A — 1-butyne
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Q. Which of the following is a unit of concentration that expresses the amount of solute per volume of solution?
-
A.
Molarity
-
B.
Molality
-
C.
Mole fraction
-
D.
Normality
Solution
Molarity is defined as moles of solute per liter of solution.
Correct Answer: A — Molarity
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Q. Which of the following is a unit of enthalpy?
-
A.
Joules
-
B.
Calories
-
C.
Kilojoules
-
D.
All of the above
Solution
Enthalpy can be expressed in Joules, Calories, and Kilojoules.
Correct Answer: D — All of the above
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Q. Which of the following is a unit of pressure?
-
A.
Pascal
-
B.
Joule
-
C.
Coulomb
-
D.
Liter
Solution
Pascal (Pa) is the SI unit of pressure, defined as one newton per square meter.
Correct Answer: A — Pascal
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Q. Which of the following is an alkane?
-
A.
C2H4
-
B.
C3H6
-
C.
C4H10
-
D.
C5H8
Solution
Alkanes are saturated hydrocarbons with the general formula CnH2n+2. C4H10 (butane) fits this formula.
Correct Answer: C — C4H10
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Q. Which of the following is an example of a -I effect?
-
A.
–F
-
B.
–OCH3
-
C.
–CH3
-
D.
–C2H5
Solution
The –F group is an example of a -I effect as it withdraws electron density through sigma bonds.
Correct Answer: A — –F
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