Practice Pakistan questions with answers and explanations.
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The cube root is the number that gives 729 when cubed.
Since 9³ = 729, the answer is 9.
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A prime number has exactly two positive factors: 1 and itself.
The number 29 is not divisible by 2, 3, or 5.
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The sequence increases by 3 each time.
Adding 3 to 11 gives 14.
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The common factors of 36 and 48 include 1, 2, 3, 4, 6, and 12.
The greatest of these is 12.
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The sum of the first n natural numbers is n(n + 1)/2.
For n = 10, the sum is 10 × 11 ÷ 2 = 55.
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Sand particles are too large to pass through filter paper.
Water passes through as the filtrate.
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Evaporation removes water as vapor.
The dissolved salt remains behind as crystals.
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Distillation boils water and then condenses the vapor.
Nonvolatile salts remain in the original container.
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Atoms are the basic chemical units of elements.
They contain protons, neutrons, and electrons.
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Protons carry positive electric charge.
They are located in the atomic nucleus.
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Electrons carry negative charge.
They occupy regions around the nucleus.
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Neutrons are electrically neutral.
They are found in atomic nuclei with protons.
