Undergraduate
Q. Which of the following compounds is an example of a coordination complex? (2022)
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A.
NaCl
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B.
CuSO4
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C.
[Cu(NH3)4]SO4
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D.
Fe2O3
Solution
[Cu(NH3)4]SO4 is a coordination complex where copper is coordinated to ammonia ligands.
Correct Answer: C — [Cu(NH3)4]SO4
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Q. Which of the following compounds is an example of a covalent compound formed by a p-block element? (2022)
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A.
NaCl
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B.
MgO
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C.
SiCl4
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D.
CaF2
Solution
SiCl4 is a covalent compound formed by silicon, a p-block element.
Correct Answer: C — SiCl4
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Q. Which of the following compounds is an example of a covalent compound? (2019)
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A.
NaCl
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B.
MgO
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C.
SiO2
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D.
CaF2
Solution
SiO2 (silicon dioxide) is a covalent compound formed by the sharing of electrons between silicon and oxygen.
Correct Answer: C — SiO2
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Q. Which of the following compounds is an example of a haloarene? (2019)
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A.
Chloroethane
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B.
Bromobenzene
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C.
Iodobutane
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D.
Chloropropane
Solution
Bromobenzene is a haloarene as it contains a halogen atom directly attached to an aromatic ring.
Correct Answer: B — Bromobenzene
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Q. Which of the following compounds is an example of a p-block element compound? (2020)
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A.
NaCl
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B.
MgO
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C.
AlCl3
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D.
CaF2
Solution
AlCl3 is a compound formed from a p-block element (Aluminum) and is a classic example of p-block chemistry.
Correct Answer: C — AlCl3
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Q. Which of the following compounds is an example of an aromatic hydrocarbon? (2023)
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A.
Cyclohexane
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B.
Benzene
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C.
Ethylene
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D.
Propane
Solution
Benzene is an aromatic hydrocarbon characterized by its stable ring structure and delocalized electrons.
Correct Answer: B — Benzene
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Q. Which of the following compounds is an isomer of butanol?
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A.
2-Butanol
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B.
1-Butanol
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C.
Butyric acid
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D.
Butene
Solution
2-Butanol is an isomer of butanol, differing in the position of the hydroxyl group.
Correct Answer: A — 2-Butanol
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Q. Which of the following compounds is an unsaturated hydrocarbon? (2023)
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A.
C2H6
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B.
C3H8
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C.
C2H4
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D.
C4H10
Solution
C2H4 (ethylene) is an unsaturated hydrocarbon as it contains a double bond.
Correct Answer: C — C2H4
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Q. Which of the following compounds is covalent? (2019)
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A.
NaCl
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B.
MgO
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C.
H2O
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D.
CaO
Solution
H2O is a covalent compound formed by the sharing of electrons between hydrogen and oxygen atoms.
Correct Answer: C — H2O
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Q. Which of the following compounds is formed when magnesium reacts with oxygen? (2019)
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A.
MgO
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B.
MgO2
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C.
Mg2O3
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D.
Mg3O4
Solution
Magnesium reacts with oxygen to form magnesium oxide (MgO).
Correct Answer: A — MgO
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Q. Which of the following compounds is not an alcohol? (2023) 2023
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A.
Ethanol
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B.
Methanol
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C.
Phenol
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D.
Isopropanol
Solution
Phenol is not classified as an alcohol because it has an aromatic ring, while the others are aliphatic alcohols.
Correct Answer: C — Phenol
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Q. Which of the following compounds is responsible for ozone layer depletion? (2019)
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A.
Methane
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B.
Chlorofluorocarbons (CFCs)
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C.
Carbon Dioxide
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D.
Nitrous Oxide
Solution
Chlorofluorocarbons (CFCs) are known to deplete the ozone layer by breaking down ozone molecules in the stratosphere.
Correct Answer: B — Chlorofluorocarbons (CFCs)
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Q. Which of the following compounds is used as a bleaching agent? (2022)
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A.
H2O2
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B.
NaCl
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C.
CaO
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D.
NH4Cl
Solution
Hydrogen peroxide (H2O2) is commonly used as a bleaching agent.
Correct Answer: A — H2O2
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Q. Which of the following compounds is used as a drying agent? (2023)
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A.
Calcium chloride
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B.
Sodium chloride
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C.
Potassium bromide
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D.
Magnesium sulfate
Solution
Calcium chloride (CaCl2) is commonly used as a drying agent due to its hygroscopic nature.
Correct Answer: A — Calcium chloride
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Q. Which of the following compounds is used as an antiseptic? (2020)
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A.
Ethanol
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B.
Acetic acid
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C.
Benzyl alcohol
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D.
Chloroform
Solution
Ethanol is commonly used as an antiseptic due to its ability to kill bacteria and viruses.
Correct Answer: A — Ethanol
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Q. Which of the following compounds is used as an artificial sweetener? (2020)
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A.
Fructose
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B.
Glucose
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C.
Aspartame
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D.
Sucrose
Solution
Aspartame is a widely used artificial sweetener that is approximately 200 times sweeter than sucrose.
Correct Answer: C — Aspartame
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Q. Which of the following compounds is used in the production of soap? (2022)
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A.
Glycerol
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B.
Sodium hydroxide
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C.
Ethanol
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D.
Acetic acid
Solution
Sodium hydroxide is used in the saponification process to produce soap from fats and oils.
Correct Answer: B — Sodium hydroxide
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Q. Which of the following compounds is used in the treatment of diabetes? (2022)
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A.
Metformin
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B.
Ibuprofen
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C.
Aspirin
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D.
Paracetamol
Solution
Metformin is a medication commonly prescribed for the management of type 2 diabetes.
Correct Answer: A — Metformin
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Q. Which of the following conditions can lead to impaired gas exchange in the lungs? (2021)
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A.
Asthma
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B.
Hypertension
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C.
Diabetes
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D.
Anemia
Solution
Asthma can cause inflammation and constriction of the airways, leading to impaired gas exchange in the lungs.
Correct Answer: A — Asthma
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Q. Which of the following conditions can lead to the presence of protein in urine? (2023)
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A.
Dehydration
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B.
Kidney disease
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C.
High protein diet
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D.
All of the above
Solution
All of the above conditions can lead to proteinuria, which is the presence of protein in urine, indicating possible kidney issues.
Correct Answer: D — All of the above
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Q. Which of the following conditions is characterized by difficulty in breathing due to narrowed airways? (2020)
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A.
Asthma
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B.
Pneumonia
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C.
Bronchitis
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D.
Emphysema
Solution
Asthma is a condition that causes difficulty in breathing due to the narrowing of airways.
Correct Answer: A — Asthma
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Q. Which of the following cycles involves the movement of water through the ecosystem? (2021)
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A.
Carbon cycle
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B.
Nitrogen cycle
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C.
Water cycle
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D.
Phosphorus cycle
Solution
The water cycle describes the continuous movement of water within the Earth and atmosphere.
Correct Answer: C — Water cycle
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Q. Which of the following d-block elements is a good conductor of electricity?
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A.
Copper
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B.
Zinc
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C.
Cadmium
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D.
Mercury
Solution
Copper (Cu) is known for its excellent electrical conductivity.
Correct Answer: A — Copper
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Q. Which of the following d-block elements is used in making alloys?
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A.
Gold
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B.
Silver
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C.
Nickel
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D.
Lead
Solution
Nickel (Ni) is commonly used in making various alloys due to its strength and corrosion resistance.
Correct Answer: C — Nickel
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Q. Which of the following describes the arrangement of particles in a gas? (2023)
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A.
Tightly packed in a fixed position
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B.
Close together but can move past each other
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C.
Far apart and moving freely
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D.
Arranged in a regular pattern
Solution
In gases, particles are far apart and move freely, allowing them to fill the container they are in.
Correct Answer: C — Far apart and moving freely
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Q. Which of the following describes the buoyant force acting on an object submerged in a fluid? (2020)
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A.
It is equal to the weight of the fluid displaced.
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B.
It is equal to the weight of the object.
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C.
It is always greater than the weight of the object.
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D.
It is independent of the fluid density.
Solution
According to Archimedes' principle, the buoyant force on a submerged object is equal to the weight of the fluid displaced by the object.
Correct Answer: A — It is equal to the weight of the fluid displaced.
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Q. Which of the following describes the flow of an ideal fluid? (2022)
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A.
Incompressible and non-viscous
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B.
Viscous and compressible
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C.
Incompressible and viscous
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D.
Compressible and non-viscous
Solution
An ideal fluid is defined as being incompressible and non-viscous, meaning it has no internal friction.
Correct Answer: A — Incompressible and non-viscous
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Q. Which of the following describes the relationship between pressure and volume of a gas at constant temperature?
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A.
Charles's Law
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B.
Boyle's Law
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C.
Avogadro's Law
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D.
Ideal Gas Law
Solution
Boyle's Law states that the pressure of a gas is inversely proportional to its volume at constant temperature.
Correct Answer: B — Boyle's Law
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Q. Which of the following devices uses the magnetic effects of current? (2023)
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A.
Electric motor
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B.
Battery
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C.
Resistor
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D.
Capacitor
Solution
An electric motor operates based on the magnetic effects of current, converting electrical energy into mechanical energy.
Correct Answer: A — Electric motor
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Q. Which of the following devices uses the principle of electromagnetic induction? (2022)
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A.
Transformer
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B.
Resistor
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C.
Capacitor
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D.
Diode
Solution
A transformer uses the principle of electromagnetic induction to transfer electrical energy between circuits.
Correct Answer: A — Transformer
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