Q. Which of the following elements is a metalloid in the p-block? (2022) 2022
A.
Boron
B.
Aluminium
C.
Gallium
D.
Indium
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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
A.
Oxygen
B.
Nitrogen
C.
Neon
D.
Hydrogen
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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
A.
Sodium
B.
Calcium
C.
Aluminium
D.
Iron
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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)
A.
Calcium
B.
Magnesium
C.
Iron
D.
Nitrogen
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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 considered a secondary macronutrient? (2023)
A.
Iron
B.
Calcium
C.
Zinc
D.
Manganese
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Solution
Calcium is classified as a secondary macronutrient, important for cell wall structure and stability.
Correct Answer:
B
— Calcium
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Q. Which of the following elements is known for forming a stable +3 oxidation state? (2023)
A.
Aluminium
B.
Gallium
C.
Indium
D.
Thallium
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Solution
Aluminium commonly forms a stable +3 oxidation state in its compounds.
Correct Answer:
A
— Aluminium
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Q. Which of the following elements is known for forming a stable +4 oxidation state? (2023)
A.
Carbon
B.
Silicon
C.
Germanium
D.
Tin
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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?
A.
Calcium
B.
Copper
C.
Sodium
D.
Magnesium
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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)
A.
Copper
B.
Calcium
C.
Sodium
D.
Barium
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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?
A.
Copper
B.
Iron
C.
Platinum
D.
Zinc
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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)
A.
Sodium
B.
Chlorine
C.
Calcium
D.
Potassium
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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)
A.
Boron
B.
Carbon
C.
Fluorine
D.
Aluminum
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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)
A.
Chlorine
B.
Oxygen
C.
Nitrogen
D.
Carbon
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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)
A.
Carbon
B.
Oxygen
C.
Sodium
D.
Nitrogen
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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
A.
Carbon
B.
Oxygen
C.
Sodium
D.
Nitrogen
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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)
A.
Sodium
B.
Magnesium
C.
Chlorine
D.
Aluminum
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Solution
Chlorine (Cl) is a non-metal and tends to form covalent bonds.
Correct Answer:
C
— Chlorine
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Q. Which of the following elements is not a p-block element? (2022)
A.
Boron
B.
Carbon
C.
Sodium
D.
Nitrogen
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Solution
Sodium is an s-block element, while Boron, Carbon, and Nitrogen are p-block elements.
Correct Answer:
C
— Sodium
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Q. Which of the following elements is not an alkali metal? (2023)
A.
Lithium
B.
Sodium
C.
Potassium
D.
Aluminum
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Solution
Aluminum (Al) is not an alkali metal; it is a post-transition metal.
Correct Answer:
D
— Aluminum
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Q. Which of the following elements is not an alkaline earth metal? (2023)
A.
Beryllium
B.
Magnesium
C.
Aluminum
D.
Calcium
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Solution
Aluminum (Al) is not an alkaline earth metal; it is a post-transition metal.
Correct Answer:
C
— Aluminum
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Q. Which of the following enzymes is secreted by the pancreas? (2020)
A.
Pepsin
B.
Amylase
C.
Trypsin
D.
Both Amylase and Trypsin
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Solution
Both amylase and trypsin are enzymes secreted by the pancreas to aid in digestion.
Correct Answer:
D
— Both Amylase and Trypsin
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Q. Which of the following equations has roots that are both negative? (2022)
A.
x² + 4x + 4 = 0
B.
x² - 4x + 4 = 0
C.
x² + 2x + 1 = 0
D.
x² - 2x + 1 = 0
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Solution
The equation x² + 4x + 4 = 0 has roots -2 and -2, which are both negative.
Correct Answer:
A
— x² + 4x + 4 = 0
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Q. Which of the following equations represents Bernoulli's principle?
A.
P + 1/2 ρv² + ρgh = constant
B.
P = ρgh
C.
F = ma
D.
V = IR
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Solution
Bernoulli's principle is represented by the equation P + 1/2 ρv² + ρgh = constant, relating pressure, velocity, and height in a fluid.
Correct Answer:
A
— P + 1/2 ρv² + ρgh = constant
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Q. Which of the following f-block elements is used in making strong permanent magnets? (2022)
A.
Cerium
B.
Neodymium
C.
Plutonium
D.
Uranium
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Solution
Neodymium is used in making strong permanent magnets, known as neodymium magnets.
Correct Answer:
B
— Neodymium
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Q. Which of the following f-block elements is used in the production of nuclear reactors? (2023)
A.
Uranium
B.
Thorium
C.
Plutonium
D.
Neptunium
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Solution
Uranium is commonly used in the production of nuclear reactors due to its fissile properties.
Correct Answer:
A
— Uranium
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Q. Which of the following factors does NOT affect the gravitational force between two masses? (2023)
A.
Mass of the first object
B.
Mass of the second object
C.
Distance between the objects
D.
Color of the objects
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Solution
The color of the objects does not affect the gravitational force between them.
Correct Answer:
D
— Color of the objects
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Q. Which of the following factors does NOT affect the gravitational force between two objects? (2021)
A.
Mass of the objects
B.
Distance between the objects
C.
Shape of the objects
D.
Gravitational constant
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Solution
The shape of the objects does not affect the gravitational force; only mass and distance do.
Correct Answer:
C
— Shape of the objects
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Q. Which of the following factors does NOT affect the position of equilibrium in a chemical reaction? (2021)
A.
Concentration of reactants
B.
Temperature
C.
Pressure
D.
Nature of the reactants
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Solution
The nature of the reactants does not affect the position of equilibrium. Changes in concentration, temperature, and pressure can shift the equilibrium position according to Le Chatelier's principle.
Correct Answer:
D
— Nature of the reactants
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Q. Which of the following factors does NOT affect the position of equilibrium? (2023) 2023
A.
Concentration of reactants
B.
Temperature
C.
Pressure
D.
Presence of a catalyst
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Solution
A catalyst speeds up the rate of reaching equilibrium but does not affect the position of equilibrium itself.
Correct Answer:
D
— Presence of a catalyst
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Q. Which of the following factors does NOT affect the rate of a chemical reaction? (2021) 2021
A.
Concentration of reactants
B.
Temperature
C.
Presence of a catalyst
D.
Color of the reactants
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Solution
The color of the reactants does not affect the rate of a chemical reaction. The other factors directly influence the reaction rate.
Correct Answer:
D
— Color of the reactants
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Q. Which of the following factors does NOT affect the rate of transpiration? (2022)
A.
Humidity
B.
Temperature
C.
Wind speed
D.
Soil type
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Solution
Soil type does not directly affect the rate of transpiration; however, it can influence water availability.
Correct Answer:
D
— Soil type
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