NUMS ENTRY TEST 5 YEARS PAST PAPERS
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
واشنگ سوڈا کا کیمیائی فارمولا کیا ہے؟
- NaHCO₃
- Na₂SO₃
- Na₂CO₃
- None of these
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Explanation
Washing soda, also known as sodium carbonate, has the chemical formula Na₂CO₃.It is commonly used in cleaning agents and water softeners.Washing soda is a whitish, odourless powder.Last verified on 02-09-2026
مقناطیسی بہاؤ کی ایس آئی یونٹ کیا ہے؟
- Reluctance
- Resistance
- Permeance
- Weber
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Explanation
- Weber (Wb) is the SI unit of magnetic flux.
- One Weber is equal to one volt-second (V·s).
- A magnetic flux density of 1 Weber per square metre (1 Wb/m²) is equal to 1 Tesla (T).
- Magnetic flux measures the total magnetic field passing through a surface.
Last verified on 03-07-2026
ثانوی الکوحل کے آکسیڈیشن سے کیا بنتا ہے؟
- Aldehydes
- Ketones
- Ethers
- Esters
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Explanation
- Oxidation of secondary alcohols produces ketones.
- Secondary alcohols have –OH group attached to a carbon bonded with two other carbons.
- During oxidation, hydrogen is removed and a carbonyl (C=O) group is formed.
Additional information:
- Primary alcohol → Aldehyde → Acid
- Secondary alcohol → Ketone (stops here)
- Tertiary alcohol → No easy oxidation
Last verified on 05-06-2026
فلیم سیلز کس جانور کے اخراجی عضو ہیں؟
- Coelenterate
- Plateleminthes (Planaria)
- Annelida
- None of these
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Explanation
- Flame cells are specialized excretory organs in flatworms (Planaria (Platyhelminthes)
- They remove waste and excess water from the body.
- Called “flame cells” because cilia inside them flicker like a flame.
- Part of the protonephridial system in invertebrates.
Last verified on 07-02-2026
پانی کے جذب کی وجہ سے ساخت کی سوجن _____ کہلاتی ہے؟
- Imbibition
- Guttation
- Plasmolysis
- None of these
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Explanation
- Imbibition is the process where seeds absorb water, swell, and become metabolically active.
- It is the first step in seed germination.
- Occurs due to osmosis and capillary action.
Last verified on 31-01-2026
پودوں کے چھونے کے جواب کو _____ کہا جاتا ہے؟
- Mechanoreception
- Geotropism
- Thigmotropism
- None of these
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Explanation
- Plants can respond to various stimuli like light, gravity, and touch.
- The response of plants to touch is called thigmotropism.
- It is commonly seen in climbing plants and vines, which coil around supports.
Last verified on 23-01-2026
اسکربک ایسڈ بھی ______ کے طور پر جانا جاتا ہے؟
- Vitamin A
- Vitamin B
- Vitamin C
- None of these
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Explanation
- Ascorbic Acid is commonly known as Vitamin C.
- It is essential for growth, repair, and maintenance of body tissues.
- Prevents scurvy, a disease caused by Vitamin C deficiency.
Additional information:
Sources of Vitamin C (5):
- Orange
- Lemon
- Guava
- Strawberry
- Bell pepper
Functions:
- Antioxidant
- Collagen synthesis
- Strengthens immunity
Last verified on 19-01-2026
- N₂ as will as CO₂
- N₂
- CO₂
- None of these
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Explanation
Burning magnesium reacts with N₂ to form magnesium nitride (Mg₃N₂).
It also burns in CO₂, breaking it down to MgO and C.
- E/2
- E/4
- E/8
- None of these
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Explanation
At the highest point, the vertical velocity becomes zero, only horizontal velocity remains.Horizontal velocity = u cos60° = u/2, so kinetic energy = 1/2m(u/2)² = E/4
- The force acts in the direction of motion
- The force acts perpendicular to its motion
- The force acts anti-parallel to its motion
- No force acts
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Explanation
Magnetic force acts perpendicular to motion.
Electron moves along the field → no perpendicular component → no force.
