Undergraduate
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 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 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 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 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 diseases is caused by a protozoan? (2023)
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A.
Malaria
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B.
Tuberculosis
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C.
HIV/AIDS
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D.
Hepatitis
Solution
Malaria is caused by protozoan parasites of the genus Plasmodium.
Correct Answer: A — Malaria
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Q. Which of the following domains includes prokaryotic organisms? (2022)
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A.
Eukarya
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B.
Bacteria
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C.
Archaea
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D.
Both Bacteria and Archaea
Solution
Both Bacteria and Archaea are domains that include prokaryotic organisms, which lack a nucleus.
Correct Answer: D — Both Bacteria and Archaea
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Q. Which of the following ecosystems has the highest biodiversity? (2020)
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A.
Desert
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B.
Tundra
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C.
Tropical rainforest
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D.
Grassland
Solution
Tropical rainforests have the highest biodiversity among ecosystems due to their warm climate and abundant rainfall.
Correct Answer: C — Tropical rainforest
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Q. Which of the following elements can form a triple bond? (2022)
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A.
Oxygen
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B.
Nitrogen
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C.
Carbon
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D.
Hydrogen
Solution
Nitrogen can form a triple bond, as seen in N2, where three pairs of electrons are shared between the two nitrogen atoms.
Correct Answer: B — Nitrogen
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Q. Which of the following elements has the electron configuration [Ne]3s²3p⁵? (2023)
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A.
Fluorine
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B.
Chlorine
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C.
Bromine
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D.
Iodine
Solution
The electron configuration [Ne]3s²3p⁵ corresponds to Chlorine, which has 17 electrons.
Correct Answer: B — Chlorine
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Q. Which of the following elements has the electronic configuration [Ne]3s²? (2016)
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A.
Sodium
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B.
Magnesium
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C.
Aluminum
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D.
Silicon
Solution
Magnesium has the electronic configuration [Ne]3s².
Correct Answer: B — Magnesium
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Q. Which of the following elements has the highest ionization energy in the alkali metal group? (2023)
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A.
Lithium
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B.
Sodium
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C.
Potassium
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D.
Rubidium
Solution
Lithium (Li) has the highest ionization energy among the alkali metals due to its smaller atomic size.
Correct Answer: A — Lithium
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Q. Which of the following elements is a f-block element?
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A.
Uranium
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B.
Titanium
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C.
Zinc
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D.
Copper
Solution
Uranium is an f-block element as it is part of the actinides series.
Correct Answer: A — Uranium
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Q. Which of the following elements is a halogen? (2017) 2017
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A.
Bromine
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B.
Barium
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C.
Bismuth
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D.
Boron
Solution
Bromine is a halogen, located in group 17 of the periodic table.
Correct Answer: A — Bromine
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