Q. Which of the following is a limitation of Raoult's Law?
-
A.
It applies to all solutions.
-
B.
It is valid for ideal solutions only.
-
C.
It does not consider temperature effects.
-
D.
It is applicable to non-volatile solutes only.
Solution
Raoult's Law is primarily valid for ideal solutions, where the interactions between molecules are similar to those in the pure components.
Correct Answer: B — It is valid for ideal solutions only.
Learn More →
Q. Which of the following is a lipid?
-
A.
Starch
-
B.
Cholesterol
-
C.
Cellulose
-
D.
Glucose
Solution
Cholesterol is a type of lipid, while starch, cellulose, and glucose are carbohydrates.
Correct Answer: B — Cholesterol
Learn More →
Q. Which of the following is a major contributor to global warming?
-
A.
Ozone
-
B.
Methane
-
C.
Nitrogen
-
D.
Argon
Solution
Methane is a potent greenhouse gas that significantly contributes to global warming.
Correct Answer: B — Methane
Learn More →
Q. Which of the following is a major contributor to the depletion of the ozone layer?
-
A.
Carbon dioxide
-
B.
Chlorofluorocarbons (CFCs)
-
C.
Methane
-
D.
Nitrous oxide
Solution
Chlorofluorocarbons (CFCs) are major contributors to the depletion of the ozone layer, leading to increased UV radiation.
Correct Answer: B — Chlorofluorocarbons (CFCs)
Learn More →
Q. Which of the following is a major source of sulfur dioxide in the atmosphere?
-
A.
Volcanic eruptions
-
B.
Automobile emissions
-
C.
Industrial processes
-
D.
All of the above
Solution
Sulfur dioxide (SO2) is released from various sources including volcanic eruptions, automobile emissions, and industrial processes.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a method for preparing aldehydes?
-
A.
Hydration of alkynes
-
B.
Oxidation of primary alcohols
-
C.
Reduction of carboxylic acids
-
D.
Dehydration of alcohols
Solution
Aldehydes can be prepared by the oxidation of primary alcohols.
Correct Answer: B — Oxidation of primary alcohols
Learn More →
Q. Which of the following is a method for preparing amines?
-
A.
Reduction of nitriles
-
B.
Hydrolysis of esters
-
C.
Dehydration of alcohols
-
D.
Oxidation of aldehydes
Solution
Amines can be prepared by the reduction of nitriles.
Correct Answer: A — Reduction of nitriles
Learn More →
Q. Which of the following is a method for synthesizing alcohols?
-
A.
Hydration of alkenes
-
B.
Reduction of aldehydes
-
C.
Reduction of ketones
-
D.
All of the above
Solution
All the listed methods (hydration of alkenes, reduction of aldehydes, and reduction of ketones) can be used to synthesize alcohols.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a method for synthesizing aldehydes?
-
A.
Hydration of alkynes
-
B.
Hydrolysis of esters
-
C.
Reduction of carboxylic acids
-
D.
Oxidation of primary alcohols
Solution
Aldehydes can be synthesized by the hydration of alkynes.
Correct Answer: A — Hydration of alkynes
Learn More →
Q. Which of the following is a method for synthesizing amines?
-
A.
Reduction of nitriles
-
B.
Hydrolysis of amides
-
C.
Alkylation of ammonia
-
D.
All of the above
Solution
All listed methods can be used to synthesize amines.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a method for synthesizing ethers?
-
A.
Dehydration of alcohols
-
B.
Hydrogenation of alkenes
-
C.
Oxidation of alcohols
-
D.
Reduction of ketones
Solution
Ethers can be synthesized by the dehydration of two alcohol molecules.
Correct Answer: A — Dehydration of alcohols
Learn More →
Q. Which of the following is a method for the preparation of alkenes?
-
A.
Hydrogenation
-
B.
Dehydrohalogenation
-
C.
Hydrolysis
-
D.
Oxidation
Solution
Dehydrohalogenation is a common method for preparing alkenes from alkyl halides.
Correct Answer: B — Dehydrohalogenation
Learn More →
Q. Which of the following is a method for the preparation of amines?
-
A.
Reduction of nitriles
-
B.
Hydrolysis of amides
-
C.
Alkylation of ammonia
-
D.
All of the above
Solution
All of the listed methods can be used to prepare amines.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a method for the preparation of ethers?
-
A.
Dehydration of alcohols
-
B.
Hydrolysis of alkyl halides
-
C.
Oxidation of alcohols
-
D.
Reduction of ketones
Solution
Ethers can be prepared by the dehydration of two alcohol molecules.
Correct Answer: A — Dehydration of alcohols
Learn More →
Q. Which of the following is a method for the preparation of haloalkanes?
-
A.
Hydrohalogenation of alkenes
-
B.
Halogenation of alkanes
-
C.
Nucleophilic substitution
-
D.
All of the above
Solution
All of the listed methods can be used to prepare haloalkanes.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a method for the synthesis of ketones?
-
A.
Oxidation of primary alcohols
-
B.
Hydration of alkynes
-
C.
Reduction of carboxylic acids
-
D.
Dehydration of alcohols
Solution
The hydration of alkynes leads to the formation of ketones, especially when using a catalyst.
Correct Answer: B — Hydration of alkynes
Learn More →
Q. Which of the following is a method to distinguish between aldehydes and ketones?
-
A.
Benedict's test
-
B.
Tollens' test
-
C.
Iodoform test
-
D.
Fehling's test
Solution
Tollens' test can be used to distinguish between aldehydes and ketones, as aldehydes reduce Tollens' reagent.
Correct Answer: B — Tollens' test
Learn More →
Q. Which of the following is a method to prepare aldehydes?
-
A.
Hydration of alkynes
-
B.
Hydrolysis of nitriles
-
C.
Oxidation of primary alcohols
-
D.
All of the above
Solution
All of the listed methods can be used to prepare aldehydes.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a method to prepare haloalkanes?
-
A.
Hydrogenation of alkenes
-
B.
Halogenation of alkanes
-
C.
Dehydrohalogenation
-
D.
Hydrolysis of alcohols
Solution
Haloalkanes can be prepared by the halogenation of alkanes, which involves the substitution of hydrogen by halogen.
Correct Answer: B — Halogenation of alkanes
Learn More →
Q. Which of the following is a method to reduce air pollution?
-
A.
Using public transport
-
B.
Burning fossil fuels
-
C.
Deforestation
-
D.
Increasing industrial emissions
Solution
Using public transport helps reduce the number of vehicles on the road, thereby decreasing air pollution.
Correct Answer: A — Using public transport
Learn More →
Q. Which of the following is a method to reduce water pollution?
-
A.
Using biodegradable materials
-
B.
Increasing industrial waste discharge
-
C.
Reducing vegetation
-
D.
None of the above
Solution
Using biodegradable materials helps reduce water pollution by minimizing the impact of waste on aquatic ecosystems.
Correct Answer: A — Using biodegradable materials
Learn More →
Q. Which of the following is a monosaccharide?
-
A.
Sucrose
-
B.
Lactose
-
C.
Glucose
-
D.
Starch
Solution
Glucose is a monosaccharide, while sucrose and lactose are disaccharides, and starch is a polysaccharide.
Correct Answer: C — Glucose
Learn More →
Q. Which of the following is a natural polymer?
-
A.
Nylon
-
B.
Cellulose
-
C.
Polystyrene
-
D.
Polyethylene
Solution
Cellulose is a natural polymer found in the cell walls of plants.
Correct Answer: B — Cellulose
Learn More →
Q. Which of the following is a natural source of caffeine?
-
A.
Tea leaves
-
B.
Sugar cane
-
C.
Corn
-
D.
Rice
Solution
Tea leaves are a natural source of caffeine, commonly consumed in beverages.
Correct Answer: A — Tea leaves
Learn More →
Q. Which of the following is a natural sweetener derived from plants?
-
A.
Aspartame
-
B.
Stevia
-
C.
Saccharin
-
D.
Sucralose
Solution
Stevia is a natural sweetener extracted from the leaves of the Stevia rebaudiana plant.
Correct Answer: B — Stevia
Learn More →
Q. Which of the following is a natural sweetener?
-
A.
Aspartame
-
B.
Sucralose
-
C.
Stevia
-
D.
Saccharin
Solution
Stevia is a natural sweetener derived from the leaves of the Stevia plant.
Correct Answer: C — Stevia
Learn More →
Q. Which of the following is a noble gas?
-
A.
Neon
-
B.
Argon
-
C.
Krypton
-
D.
All of the above
Solution
All of the options listed are noble gases, which are found in group 18 of the p-block.
Correct Answer: D — All of the above
Learn More →
Q. Which of the following is a non-renewable resource?
-
A.
Wind Energy
-
B.
Natural Gas
-
C.
Hydropower
-
D.
Geothermal Energy
Solution
Natural gas is a non-renewable resource, as it is formed from fossilized organic materials over millions of years.
Correct Answer: B — Natural Gas
Learn More →
Q. Which of the following is a polysaccharide?
-
A.
Glucose
-
B.
Fructose
-
C.
Cellulose
-
D.
Galactose
Solution
Cellulose is a polysaccharide made up of long chains of glucose units.
Correct Answer: C — Cellulose
Learn More →
Q. Which of the following is a primary alcohol derived from an alkane?
-
A.
Methanol
-
B.
Ethanol
-
C.
Propan-1-ol
-
D.
Butanol
Solution
Propan-1-ol is a primary alcohol derived from propane.
Correct Answer: C — Propan-1-ol
Learn More →
Showing 2191 to 2220 of 2802 (94 Pages)