Undergraduate
Q. Which of the following devices uses the principle of electromagnetism? (2019)
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A.
Electric motor
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B.
Thermometer
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C.
Barometer
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D.
Hydrometer
Solution
An electric motor operates on the principle of electromagnetism, 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 diseases is characterized by the destruction of insulin-producing cells? (2022)
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A.
Type 1 Diabetes
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B.
Type 2 Diabetes
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C.
Hypertension
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D.
Obesity
Solution
Type 1 Diabetes is characterized by the autoimmune destruction of insulin-producing beta cells in the pancreas.
Correct Answer: A — Type 1 Diabetes
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Q. Which of the following domains includes organisms that are primarily unicellular and prokaryotic? (2023)
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A.
Eukarya
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B.
Archaea
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C.
Bacteria
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D.
Both Bacteria and Archaea
Solution
Both Bacteria and Archaea are domains that include primarily unicellular and prokaryotic organisms.
Correct Answer: D — Both Bacteria and Archaea
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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 ecosystems is characterized by high biodiversity? (2021)
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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 are known for their high biodiversity due to favorable climatic conditions.
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 has the highest melting point among the alkali metals? (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 melting point among the alkali metals due to its smaller size and stronger metallic bonding.
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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Q. Which of the following elements is a member of the alkali metals? (2020)
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A.
Magnesium
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B.
Sodium
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C.
Calcium
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D.
Barium
Solution
Sodium (Na) is an alkali metal, while Magnesium (Mg), Calcium (Ca), and Barium (Ba) are alkaline earth metals.
Correct Answer: B — Sodium
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Q. Which of the following elements is a member of the alkaline earth metals? (2021)
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A.
Sodium
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B.
Calcium
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C.
Aluminum
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D.
Iron
Solution
Calcium is a member of the alkaline earth metals, which are found in Group 2 of the periodic table.
Correct Answer: B — Calcium
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Q. Which of the following elements is a metalloid in the p-block? (2022) 2022
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A.
Boron
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B.
Aluminium
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C.
Gallium
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D.
Indium
Solution
Boron is classified as a metalloid in the p-block elements.
Correct Answer: A — Boron
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Q. Which of the following elements is a noble gas? (2021) 2021
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A.
Oxygen
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B.
Nitrogen
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C.
Neon
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D.
Hydrogen
Solution
Neon is a noble gas, which is characterized by its lack of reactivity.
Correct Answer: C — Neon
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Q. Which of the following elements is a p-block element? (2021) 2021
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A.
Sodium
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B.
Calcium
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C.
Aluminium
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D.
Iron
Solution
Aluminium (Al) is in group 13 of the periodic table, which is classified as a p-block element.
Correct Answer: C — Aluminium
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Q. Which of the following elements is considered a micronutrient? (2023)
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A.
Calcium
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B.
Magnesium
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C.
Iron
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D.
Nitrogen
Solution
Iron is classified as a micronutrient, required in smaller amounts compared to macronutrients.
Correct Answer: C — Iron
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Q. Which of the following elements is known for forming a stable +4 oxidation state? (2023)
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A.
Carbon
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B.
Silicon
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C.
Germanium
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D.
Tin
Solution
Tin (Sn) is known for forming a stable +4 oxidation state.
Correct Answer: D — Tin
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Q. Which of the following elements is known for forming complex ions?
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A.
Calcium
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B.
Copper
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C.
Sodium
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D.
Magnesium
Solution
Copper (Cu) is known for forming complex ions due to its ability to coordinate with ligands.
Correct Answer: B — Copper
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Q. Which of the following elements is known for its ability to form complex ions? (2022)
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A.
Copper
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B.
Calcium
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C.
Sodium
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D.
Barium
Solution
Copper (Cu) is known for its ability to form complex ions due to its d-orbitals.
Correct Answer: A — Copper
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Q. Which of the following elements is known for its catalytic properties?
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A.
Copper
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B.
Iron
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C.
Platinum
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D.
Zinc
Solution
Platinum (Pt) is widely known for its catalytic properties in various chemical reactions.
Correct Answer: C — Platinum
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Q. Which of the following elements is most likely to form a covalent bond? (2023)
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A.
Sodium
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B.
Chlorine
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C.
Calcium
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D.
Potassium
Solution
Chlorine (Cl) is a non-metal and is most likely to form covalent bonds.
Correct Answer: B — Chlorine
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Q. Which of the following elements is most likely to form an anion? (2023)
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A.
Boron
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B.
Carbon
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C.
Fluorine
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D.
Aluminum
Solution
Fluorine (F) is highly electronegative and readily forms anions (F-).
Correct Answer: C — Fluorine
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Q. Which of the following elements is most likely to form an ionic bond with sodium? (2020)
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A.
Chlorine
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B.
Oxygen
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C.
Nitrogen
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D.
Carbon
Solution
Chlorine is most likely to form an ionic bond with sodium as it readily accepts an electron to achieve a stable electron configuration.
Correct Answer: A — Chlorine
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Q. Which of the following elements is most likely to form an ionic bond? (2023)
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A.
Carbon
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B.
Oxygen
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C.
Sodium
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D.
Nitrogen
Solution
Sodium is most likely to form an ionic bond as it readily loses an electron to form Na+.
Correct Answer: C — Sodium
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Q. Which of the following elements is most likely to form an ionic bond? (2023) 2023
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A.
Carbon
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B.
Oxygen
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C.
Sodium
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D.
Nitrogen
Solution
Sodium is most likely to form an ionic bond as it readily loses an electron to form Na+.
Correct Answer: C — Sodium
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Q. Which of the following elements is most likely to form covalent bonds? (2023)
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A.
Sodium
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B.
Magnesium
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C.
Chlorine
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D.
Aluminum
Solution
Chlorine (Cl) is a non-metal and tends to form covalent bonds.
Correct Answer: C — Chlorine
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