Most Repeated GK MCQs from Past Papers MCQs with Answers & Explanations (Page 121)

Explanation Optical fiber uses the optical principle of "total internal reflection" to capture the light transmitted in an optical fiber and confine the light to the core of the fiber. ****** RY 15-01-2023

Explanation Would you lend me a book? کیا آپ مجھے ایک کتاب ادھار دیں گے Lend = give temporarily (to someone else) The word lend is used here because of the sentence structure: The key is the word "me" - it's the indirect object of the sentence. lend + someone + something

Explanation WRATH غصہ , ا غَضَب Anger, غصہ

Explanation This is an arithmetic sequence with common difference of 3. The first element is 1, and total elements are 101. So, a1 = 1, d = 3 and n = 101. Therefore, by using the formula of nth term of an arithmetic sequence, we have 301 .

Explanation A byte is a combination of 2 nibbles , as each nibble consists of 4 bits, and 4 bits + 4 bits = 8 bits , which equals one byte. Bit: The smallest unit of data in computing, representing a single binary value (0 or 1). Nibble: A group of 4 bits. Byte: A group of 8 bits, which is typically the smallest addressable unit of memory in most computer systems.

Explanation Darwin's theory of natural selection states that variations occur randomly and beneficial variations help in survival and reproduction. Mutations and genetic recombination introduce new variations , which may be advantageous, neutral, or harmful .

Explanation Two angles (90 ° + 90 °) are said to be supplementary if the sum of their measures is 180o. The given angle is 123o Let the measure of its supplementary angle be xo. Then, = x + 123 = 180 x = 180 - 123 = 57o

Explanation Three types of bus are used. Address bus : carries memory addresses from the processor to other components such as primary storage and input/output devices. Data bus : carries the data between the processor and other components. Control bus : carries control signals from the processor to other components.

Explanation Manu gives a list of the item s presented in the restaurant. Similarly, a catalogue lists the books present in a library.

Explanation Stride آگے بڑھنا Walk چلنا

Explanation When an angle measures to be an exact 90 degrees, it is called a right angle. It is also called a perpendicular angle. Additional information: Acute angles measure less t han 90 degrees. Right angles measure 90 d egrees. Obtuse angles measure more than 90 degrees.

Explanation Given : Radius = 5 meters Formula: Diameter =radius * 2 Solution: Diameter = 5*2 = 10 meters

Explanation System software - specifically the Operating System (OS) - controls the computer's hardware. It manages the CPU, memory, storage, and input/output devices.

Explanation In Islam, a Surah (سورة) refers to a chapter or section of the Holy Quran . It can also mean a place of refuge or a shelter.

"Myths" provides the direct parallel contrast to "realities," matching the sentence's antithetical structure.

"Remote" in this geographic context denotes isolated, distant, or far from population centers.

Option D incorrectly pairs the present perfect tense ('has nearly doubled') with a specific past time indicator ('last year').

In Oscar Wilde's passage, the text concludes: 'The dim roar of London was like the bourdon note of a distant organ.'

'Tremulous' in literary contexts indicates quivering or wavering.

Option D incorrectly pairs the present perfect tense ('has nearly doubled') with a specific past time adverbial ('last year'); it should be 'nearly doubled'.