GENERAL SCIENCE CLASS 4 MCQS
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
آواز ______ سے گزر نہیں سکتی؟
Solid
Liquid
Gases
Vacuum
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Explanation
Because sound is just vibrating air, space has no air to vibrate and therefore no sound in a vacuum .
Sound waves below 20 Hz are known as infrasound .
Sound waves above 20 kHz are known as ultrasound
Sound waves transmit a medium such as a gas, liquid, or solid.
The speed of sound in air is about 343 meters per second The sound travels at 1,481 m/s in water The speed of sound in a vacuum is zero meters per second, Sh10-8-2023
آئرن کی کمی سے کون سی بیماری ہوتی ہے؟
Berberi
Anaemia
Rickets
Scurvy
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Explanation
Iron deficiency can lead to Anaemia , a condition characterized by:
Low red blood cell count Pale skin Fatigue Shortness of breath Dizziness
وہ جانور جو پودوں اور جانوروں دونوں کو کھاتے ہیں انہیں کیا کہا جاتا ہے؟
Omnivores
Herbivores
Carnivores
None
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Explanation
Omnivores are animals that eat both plants and animals. They have adaptations that allow them to digest and extract nutrients from a wide variety of food sources , including fruits, leaves, insects, small animals, and even carrion. Examples of omnivores include humans, bears, pigs, chimpanzees, and raccoons.
زمین کس زاویہ پر جھکی ہوئی ہے؟
23.5°
23.0°
23.08°
24.30°
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Explanation
The Earth is tilted at an angle of 23.5 degrees . This tilt is responsible for the changing of the seasons and the difference in the amount of sunlight reaching a given point on the surface during the course of a year. The tilt varies between 22.1 and 24.5 degrees in a cycle that averages about 40,000 years.
کیلشیم کی کمی سے کون سی بیماری ہوتی ہے؟
Anaemia
Beriberi
Rickets
Scurvy
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Explanation
Rickets is a disease caused by a deficiency of Calcium and Vitamin D. It leading to softening of the bones in children. It can cause bowed legs, stunted growth, and skeletal deformities.
انسانی جسم کا اوسط اندرونی درجہ حرارت کیا ہے؟
42°C
37°C
98°C
35°C
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Explanation
The average internal temperature of the human body is 37°C (98.6°F). Which is the normal body temperature range for a healthy adult.
وٹامن ڈی کی کمی کے نتیجے میں کیا ہوتا ہے؟
Beriberi
Night Blindness
Scurvy
Rickets
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Explanation
Vitamin D deficiency can cause Rickets , a disease characterized by:
Soft and weak bones Skeletal deformities Stunted growth Increased risk of fractures
آیوڈین کی کمی سے کون سی بیماری ہوتی ہے؟
Imbalances in fluid volume in the vessels and tissues
Goiter
Tetnas
Cancer
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Explanation
Goiter is caused by iodine deficiency.
It results in an enlarged thyroid gland.
Iodine deficiency can cause mental retardation in children .
Particularly if the deficiency occurs during fetal development or early childhood.
This is because iodine is essential for brain development and thyroid function.
The effects of the thyroid come from two iodine-containing hormones .
فارن ہائیٹ پیمانے پر پانی کا نقطہ انجماد ______ ہے؟
30°F
32°F
34°F
100°F
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Explanation
In the Fahrenheit scale :
The freezing point of water is 32°F The boiling point of water is 212°F
وٹامن اے کی کمی کا کیا سبب ہے؟
Scurvy
Night Blindness
Rickets
Beriberi
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Explanation
Vitamin A deficiency can cause Night Blindness.
As well as other health problems such as:
Dry skin and eyes Impaired immune function Poor wound healing Increased risk of respiratory and urinary tract infections