Q. Which gas is produced when an acid reacts with a carbonate?
A.
Oxygen
B.
Carbon dioxide
C.
Hydrogen
D.
Nitrogen
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Solution
The reaction of an acid with a carbonate produces carbon dioxide gas.
Correct Answer: B — Carbon dioxide
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Q. Which gas law combines Boyle's and Charles's laws?
A.
Avogadro's Law
B.
Ideal Gas Law
C.
Dalton's Law
D.
Graham's Law
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Solution
The ideal gas law combines Boyle's and Charles's laws, relating pressure, volume, and temperature of an ideal gas.
Correct Answer: B — Ideal Gas Law
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Q. Which gas law describes the relationship between pressure, volume, and temperature?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Ideal Gas Law
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Solution
The Ideal Gas Law describes the relationship between pressure, volume, and temperature of a gas.
Correct Answer: D — Ideal Gas Law
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Q. Which gas law relates pressure and temperature at constant volume?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Gay-Lussac's Law
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Solution
Gay-Lussac's Law relates pressure and temperature at constant volume.
Correct Answer: D — Gay-Lussac's Law
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Q. Which gas law relates pressure, volume, and temperature of an ideal gas?
A.
Boyle's Law
B.
Charles's Law
C.
Ideal Gas Law
D.
Avogadro's Law
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Solution
The Ideal Gas Law (PV = nRT) relates pressure, volume, and temperature of an ideal gas.
Correct Answer: C — Ideal Gas Law
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Q. Which gas law relates the pressure, volume, and temperature of a gas?
A.
Boyle's Law
B.
Charles's Law
C.
Ideal Gas Law
D.
Avogadro's Law
Show solution
Solution
The Ideal Gas Law (PV = nRT) relates pressure, volume, and temperature of an ideal gas.
Correct Answer: C — Ideal Gas Law
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Q. Which gas law relates the pressure, volume, and temperature of an ideal gas?
A.
Boyle's Law
B.
Charles's Law
C.
Ideal Gas Law
D.
Avogadro's Law
Show solution
Solution
The Ideal Gas Law (PV = nRT) relates pressure, volume, and temperature of an ideal gas.
Correct Answer: C — Ideal Gas Law
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Q. Which gas law relates the volume and temperature of a gas at constant pressure?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Graham's Law
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Solution
Charles's Law states that the volume of a gas is directly proportional to its temperature at constant pressure.
Correct Answer: B — Charles's Law
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Q. Which gas law relates volume and temperature at constant pressure?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Ideal Gas Law
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Solution
Charles's Law states that the volume of a gas is directly proportional to its temperature at constant pressure.
Correct Answer: B — Charles's Law
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Q. Which gas law states that the volume of a gas is directly proportional to its temperature at constant pressure?
A.
Boyle's Law
B.
Charles's Law
C.
Gay-Lussac's Law
D.
Avogadro's Law
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Solution
Charles's Law states that the volume of a gas is directly proportional to its temperature at constant pressure.
Correct Answer: B — Charles's Law
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Q. Which gas law states that the volume of a gas is directly proportional to the number of moles at constant temperature and pressure?
A.
Boyle's Law
B.
Charles's Law
C.
Avogadro's Law
D.
Graham's Law
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Solution
Avogadro's Law states that the volume of a gas is directly proportional to the number of moles at constant temperature and pressure.
Correct Answer: C — Avogadro's Law
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Q. Which gate can be used to create a NOT operation using only NAND gates?
A.
Two NAND gates
B.
One NAND gate
C.
Three NAND gates
D.
Four NAND gates
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Solution
A NOT operation can be created using two NAND gates.
Correct Answer: A — Two NAND gates
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Q. Which gate can be used to invert the output of an AND gate?
A.
OR Gate
B.
NAND Gate
C.
XOR Gate
D.
NOT Gate
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Solution
A NAND gate inverts the output of an AND gate.
Correct Answer: B — NAND Gate
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Q. Which gate outputs true only when all inputs are false?
A.
AND
B.
OR
C.
NOR
D.
NAND
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Solution
The NOR gate outputs true only when all inputs are false.
Correct Answer: C — NOR
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Q. Which group of the periodic table contains the alkali metals?
A.
Group 1
B.
Group 2
C.
Group 13
D.
Group 18
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Solution
Alkali metals are found in Group 1 of the periodic table.
Correct Answer: A — Group 1
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Q. Which group of the periodic table contains the halogens?
A.
Group 1
B.
Group 2
C.
Group 17
D.
Group 18
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Solution
Halogens are located in Group 17 of the periodic table.
Correct Answer: C — Group 17
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Q. Which group of the periodic table contains the noble gases?
A.
Group 1
B.
Group 2
C.
Group 17
D.
Group 18
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Solution
Noble gases are found in Group 18 of the periodic table.
Correct Answer: D — Group 18
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Q. Which haloalkane is expected to have the highest boiling point?
A.
CH3Cl
B.
C2H5Cl
C.
C3H7Cl
D.
C4H9Cl
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Solution
C4H9Cl (butyl chloride) has the highest molecular weight and thus the highest boiling point due to increased van der Waals forces.
Correct Answer: D — C4H9Cl
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Q. Which haloalkane is least soluble in water?
A.
Chloroethane
B.
Bromoethane
C.
Iodoethane
D.
Fluoroethane
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Solution
Iodoethane is least soluble in water due to its larger non-polar iodine atom, which decreases the overall polarity of the molecule.
Correct Answer: C — Iodoethane
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Q. Which haloalkane would you expect to have the highest boiling point?
A.
Chloroethane
B.
Bromoethane
C.
Iodoethane
D.
Fluoroethane
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Solution
Iodoethane has the highest boiling point due to the larger size and greater polarizability of iodine, leading to stronger van der Waals forces.
Correct Answer: C — Iodoethane
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Q. Which hybridization corresponds to a tetrahedral molecular geometry?
A.
sp
B.
sp2
C.
sp3
D.
dsp2
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Solution
sp3 hybridization corresponds to a tetrahedral molecular geometry, as seen in CH4.
Correct Answer: C — sp3
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Q. Which is the correct order of adsorption strength from highest to lowest?
A.
Physisorption > Chemisorption
B.
Chemisorption > Physisorption
C.
Physisorption = Chemisorption
D.
None of the above
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Solution
Chemisorption is stronger than physisorption due to the formation of chemical bonds.
Correct Answer: B — Chemisorption > Physisorption
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Q. Which isotope is commonly used in nuclear reactors?
A.
Uranium-238
B.
Carbon-14
C.
Hydrogen-1
D.
Oxygen-16
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Solution
Uranium-238 is commonly used as fuel in nuclear reactors.
Correct Answer: A — Uranium-238
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Q. Which isotope of hydrogen is known as deuterium?
A.
H-1
B.
H-2
C.
H-3
D.
H-4
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Solution
Deuterium is the isotope of hydrogen with one neutron, denoted as H-2.
Correct Answer: B — H-2
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Q. Which isotope of hydrogen is the most abundant?
A.
Deuterium
B.
Tritium
C.
Protium
D.
Hydrogen-3
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Solution
Protium is the most abundant isotope of hydrogen.
Correct Answer: C — Protium
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Q. Which law states that energy cannot be created or destroyed?
A.
Zeroth law
B.
First law
C.
Second law
D.
Third law
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Solution
The first law of thermodynamics states that energy cannot be created or destroyed, only transformed.
Correct Answer: B — First law
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Q. Which law states that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero?
A.
Zeroth law of thermodynamics
B.
First law of thermodynamics
C.
Second law of thermodynamics
D.
Third law of thermodynamics
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Solution
The Third law of thermodynamics states that the entropy of a perfect crystal approaches zero as the temperature approaches absolute zero.
Correct Answer: D — Third law of thermodynamics
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Q. Which law states that the induced electromotive force (emf) in a closed circuit is proportional to the rate of change of magnetic flux through the circuit?
A.
Faraday's law
B.
Ampere's law
C.
Ohm's law
D.
Lenz's law
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Solution
Faraday's law states that the induced emf in a closed circuit is proportional to the rate of change of magnetic flux.
Correct Answer: A — Faraday's law
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Q. Which law states that the rate of heat transfer through a material is proportional to the temperature gradient?
A.
Newton's Law of Cooling
B.
Fourier's Law of Heat Conduction
C.
Stefan-Boltzmann Law
D.
Kirchhoff's Law
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Solution
Fourier's Law of Heat Conduction states that the rate of heat transfer through a material is proportional to the temperature gradient.
Correct Answer: B — Fourier's Law of Heat Conduction
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Q. Which law states that the rate of heat transfer through a material is proportional to the temperature difference across it?
A.
Newton's Law of Cooling
B.
Fourier's Law
C.
Stefan-Boltzmann Law
D.
Ohm's Law
Show solution
Solution
Fourier's Law states that the rate of heat transfer through a material is proportional to the temperature difference across it.
Correct Answer: B — Fourier's Law
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