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.
ایک ایٹم کا زیادہ سے زیادہ وزن _____ میں مرتکز ہے؟
A. Neutron
B. Electron
C. Proton
D. Nucleus
Check answer and explanation
Answer: Nucleus
Explanation Almost all the mass of an atom is concentrated in its nucleus . The nucleus contains protons and neutrons , which are much heavier than electrons . Electrons revolve around the nucleus but contribute very little to atomic mass. The nucleus is located at the center of the atom . Ernest Rutherford discovered the nucleus through the gold foil experiment in 1911 . Last verified on 09-05-2026
Explanation In solids, heat transfer occurs primarily through conduction , where vibrations and collisions of particles (atoms or molecules) transfer energy from one point to another.
مندرجہ ذیل میں سے کون سی غذائی نالی کی بافتی تہہ نہیں ہے؟
A. Muscular
B. Serosa
C. Secretin
D. Mucosa
Check answer and explanation
Answer: Secretin
Explanation The alimentary canal wall is made of four main tissue layers that help in digestion and movement of food. These layers include mucosa, submucosa, muscular layer, and serosa . Secretin is not a tissue layer; it is a digestive hormone released by the small intestine . Last verified on 13-03-2026
Explanation Water enters the root hair through the process of osmosis. It is the movement of water molecules from a region of high concentration to a region of low concentration through a selectively permeable membrane.
Explanation Sound travels fastest in diamond , With a speed of approximately 12,000 meters per second (m/s). Because sound travels fastest in stiff, dense materials Additional information The speeds of sound in different materials: Air: 343 m/s Water: 1433 m/s Wood: 3300-3600 m/s Brick: 4176 m/s Steel: 6100 m/s Diamond: 12000 m/s
مندرجہ ذیل میں سے کون سا آئسوٹوپ طویل عرصے تک انفیکشن اور کینسر کے خلیوں کا پتہ لگانے کے لیے استعمال ہوتا ہے؟
A. Cobalt - 60
B. Gallium - 67
C. Copper - 64
D. Iron - 59
Check answer and explanation
Answer: Gallium - 67
Explanation Gallium-67 is commonly used for the detection of prolonged infection and cancer cells. Gallium-67 citrate scans are frequently employed in nuclear medicine to locate inflammatory processes and malignant tumors.
ٹریٹیم آئسوٹوپ کے نیوکلئس میں کتنے پروٹون اور نیوٹران موجود ہیں؟
A. 4 and 1
B. 1 and 2
C. 2 and 1
D. 3 and 2
Check answer and explanation
Answer: 1 and 2
Explanation Tritium , also known as superheavy hydrogen . It has 1 proton and 2 neutrons in its atomic nucleus. Additional information : Protium (¹H) → 1 proton, 0 neutrons Deuterium (²H) → 1 proton, 1 neutron Last verified on 19-03-2026
الفابیٹ ایم کے مدار میں الیکٹران کی زیادہ سے زیادہ تعداد کتنی ہے؟
A. 4
B. 18
C. 8
D. 12
Check answer and explanation
Answer: 18
Explanation The K orbit , also known as the first electron shell. It can hold a maximum of 2 electrons. The L orbit , also known as the second electron shell. It can hold a maximum of 8 electrons. The M orbit , also known as the third electron shell. It can hold a maximum of 18 electrons.
Explanation The circulation of blood starts from the right side of the heart. Specifically from the right ventricle , which pumps blood into the pulmonary artery and sends it to the lungs to pick up oxygen.
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