UET Lahore15 Questions

Chemistry / Computer Science / Statistics / Biology MCQs

Practice Chemistry / Computer Science / Statistics / Biology multiple-choice questions for UET Lahore competitive exams. Each question includes the correct answer and a short explanation, and past-paper questions are marked so you can revise both repeated and fresh material in one place.

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CH4

H2O

HCl

H2S

ExplanationHydrogen bonding occurs when hydrogen is covalently bonded to highly electronegative atoms like oxygen, nitrogen, or fluorine.

ExplanationPotassium is +1, Oxygen is -2. 1 + Mn + 4(-2) = 0 => 1 + Mn - 8 = 0 => Mn = +7.

Oxygen

Fluorine

Nitrogen

Chlorine

ExplanationFluorine is the most electronegative element in the periodic table.

Readily Available Memory

Random Access Memory

Rapid Access Memory

Read Access Module

ExplanationRAM is the standard term for the volatile memory used in computers.

Protein synthesis

Energy production

Waste removal

DNA storage

ExplanationMitochondria are known as the powerhouses of the cell because they generate ATP.

Mean

Median

Mode

Range

ExplanationThe mean is calculated by summing all values, so extreme values significantly shift the average.

Benedict's solution

Iodine solution

Biuret reagent

Ethanol

ExplanationIodine turns blue-black in the presence of starch.

RAM

Cache

ROM

Registers

ExplanationROM (Read-Only Memory) retains its data even when power is turned off.

ExplanationA pH of 7 represents neutrality, where hydrogen and hydroxide ion concentrations are equal.

Undefined

ExplanationVariance measures dispersion; if all numbers are the same, there is no dispersion.

malloc

alloc

new

create

ExplanationThe 'new' operator is used in C++ for dynamic memory allocation.

Nucleus

Ribosome

Mitochondria

Lysosome

ExplanationMitochondria generate most of the cell's supply of adenosine triphosphate (ATP).

It is always positive

It is independent of origin

It is independent of scale

All of the above

ExplanationStandard deviation is the square root of variance and is by definition non-negative.

sp2

sp3

dsp2

ExplanationMethane has four single bonds around the central carbon, resulting in sp3 hybridization.

GET

EXTRACT

SELECT

FETCH

ExplanationThe SELECT statement is used to fetch data from a database table.

Frequently Asked Questions

Are these Chemistry / Computer Science / Statistics / Biology MCQs free?

Yes. Every Chemistry / Computer Science / Statistics / Biology MCQ on this page is free to practice, including the correct answer and explanation.

Do these include past-paper questions?

Yes — questions sourced from past papers are clearly marked with a "Past Paper" badge, alongside fresh practice questions.

Which exams do these Chemistry / Computer Science / Statistics / Biology MCQs help with?

They are aimed at UET Lahore and related Pakistani competitive exams that test Chemistry / Computer Science / Statistics / Biology.

How should I practice subject-wise MCQs?

Attempt each question first, then reveal the answer and read the explanation. Short, focused sessions on one subject work better than long unstructured reading.