Practice Pakistan questions with answers and explanations.
Choose an option to check your answer.
An element cannot be broken down chemically into simpler substances.
Each element is identified by its atomic number.
Choose an option to check your answer.
Compounds have definite formulas and characteristic properties.
Their components can be separated only by chemical means.
Choose an option to check your answer.
Mixture components retain much of their individual identity.
They can often be separated by physical methods.
Choose an option to check your answer.
The amounts subtracted are 9, 16, and 25, which are 3², 4², and 5².
Subtracting the next square, 6² = 36, gives 50 - 36 = 14.
Choose an option to check your answer.
The terms are factorials: 1!, 2!, 3!, and 4!.
The next term is 5! = 120.
Choose an option to check your answer.
The digit 7 is in the thousands place.
Therefore, its place value is 7 × 1,000 = 7,000.
Choose an option to check your answer.
A prime number has exactly two positive factors: 1 and itself.
The number 29 is not divisible by 2, 3, or 5.
Choose an option to check your answer.
The common factors of 36 and 48 include 1, 2, 3, 4, 6, and 12.
The greatest of these is 12.
Choose an option to check your answer.
Multiples of 8 are 8, 16, 24, and so on.
The first multiple also divisible by 12 is 24.
Choose an option to check your answer.
A number is divisible by 9 when the sum of its digits is divisible by 9.
For 5,832, the digit sum is 18.
Choose an option to check your answer.
Since 12 × 13 = 156, subtracting gives 157 - 156 = 1.
Thus, the remainder is 1.
Choose an option to check your answer.
Division and multiplication have equal priority and are performed left to right.
So 48 ÷ 6 = 8, and 8 × 3 = 24.
