General Science Class 7 MCQs MCQs - General Science Practice | PakExamPoint

Practise General Science Class 7 MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.

General Science Class 7 MCQs MCQs and revision practice

Study General Science Class 7 MCQs through multiple-choice questions in General Science. This subtopic contains 255 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.

Use these General Science Class 7 MCQs MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.

Continue your revision with related topics: Biology Class 10th MCQs MCQs, Biology Class 9th MCQs MCQs, Chemistry Class 10th MCQs MCQs, Chemistry Class 9th MCQs MCQs, General Science Class 10 MCQs MCQs, General Science Class 4 MCQs MCQs, General Science Class 5 MCQs MCQs, General Science Class 6 MCQs MCQs.

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General Science Class 7 MCQs: questions and answer review

Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.

131. How much percentage of water on the earth is freshwater?

زمین پر پانی کا کتنا فیصد میٹھا پانی ہے؟

Check answer and explanation

Answer: 2.5%

Explanation Only about 2.5% (3%) of the water on Earth is freshwater , which is vital for human consumption, agriculture, and ecosystem health. The remaining 97.5% (97%) is saltwater , found in oceans, seas, and salt lakes.

132. Which one of the following is not a sign of chemical change?

مندرجہ ذیل میں سے کون سی کیمیائی تبدیلی کی علامت نہیں ہے؟

Check answer and explanation

Answer: No change in composition

Explanation The correct answer is: No change in composition A chemical change involves a transformation of one or more substances into new substances, which means a change in composition. The signs of chemical change : Release of gas Change in color Change in temperature Change in smell Production of a new material

133. Which formula helps in the determination of the maximum number of electrons present in an orbit?

کون سا فارمولہ مدار میں موجود الیکٹرانوں کی زیادہ سے زیادہ تعداد کے تعین میں مدد کرتا ہے؟

Check answer and explanation

Answer: 2n^2

Explanation The formula 2n^2 helps in determining the maximum number of electrons present in an orbit, where n is the principal quantum number (energy level). This formula is based on the Aufbau principle and the Pauli exclusion principle, which describe how electrons occupy energy levels in an atom.

134. In which pollination, mature pollen grains from anther of one flower are transferred to the stigma of flower on another plant of the same kind?

کس جرگ میں، ایک پھول کے اینتھر سے بالغ جرگ کے دانے اسی قسم کے دوسرے پودے کے پھول کے داغ میں منتقل ہوتے ہیں؟

Check answer and explanation

Answer: Cross Pollination

Explanation Cross-Pollination is the transfer of mature pollen grains from the anther of one flower to the stigma of a flower on another plant of the same or different species. This means that the pollen is transferred between different plants, allowing for genetic diversity and increased fertility.

135. The unit of frequency is _____?

تعدد کی اکائی _____ ہے؟

Check answer and explanation

Answer: Hertz

Explanation Frequency is the number of occurrences of a repeating event per unit of time. SI unit hertz (Hz) In SI base units: s−1 Derivations from other quantities: f = 1 / T Dimension T^ − 1 ***

136. In the periodic table, rows is considered to be a ____?

متواتر جدول میں، قطار کو ____ سمجھا جاتا ہے؟

Check answer and explanation

Answer: Periods

Explanation In the periodic table , a rows is considered to be a periods . Periods are the horizontal rows of elements in the periodic table.

137. A light year is related to ____?

ایک نوری سال کا تعلق ____ سے ہے؟

Check answer and explanation

Answer: Distance

Explanation Light year refers to speed of light expressed in miles per year (it is about ten trillion kilometers or six trillion miles ). Light year is a unit of distance . Light Year: the distance that light can travel in one year. The distance light travels in one year is known as the light year. 1 light year is equal to 9.5 x 10^12 km ND11-07-2023

138. Which of the following acts as a pathway and transports the food from pharynx to stomach?

مندرجہ ذیل میں سے کون سا راستے کے طور پر کام کرتا ہے اور خوراک کو گلے سے معدے تک پہنچاتا ہے؟

Check answer and explanation

Answer: Oesophagus

Explanation The oesophagus (also known as the esophagus) is a muscular tube that acts as a pathway to transport food from the pharynx (throat) to the stomach. It uses peristalsis (wave-like muscle contractions) to move the food bolus into the stomach.

139. Undigested food is expelled from the human body through ____?

ہضم نہ ہونے والا کھانا ____ کے ذریعے انسانی جسم سے خارج ہوتا ہے؟

Check answer and explanation

Answer: Large Intestine

Explanation The large intestine , also known as the colon, is responsible for: Water absorption Electrolyte balance Fiber fermentation Storage and elimination of undigested food (feces)

140. The function of oesophagus in digestive system is to ____?

نظام انہضام میں غذائی نالی کا کام ____ ہے؟

Check answer and explanation

Answer: Pass the food to the Stomach

Explanation The oesophagus is a muscular tube that connects the pharynx (throat) to the stomach. Its main function is to transport food from the pharynx to the stomach through peristalsis (wave-like muscle contractions).

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