Science Test 1 General Science Aptitude
Science Test 1 General Science Aptitude
Question 11
A mobile phone sends and receives messages through _____?
Mobile phones use radio waves for transmitting and receiving communication signals.
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Question 12
Dry Ice is ____?
Dry ice is the solid form of carbon dioxide, used as a refrigerant because it sublimates directly from solid to gas.
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Question 13
The primary colors are Blue, green and ____?
The three primary colors of light are red, green, and blue. Hence, the missing one is red.
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Question 14
What constitute current in a metal wire?
In metals, electric current is carried by free-moving electrons.
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Question 15
Good conductors have many loose bounds _____?
Good conductors contain free electrons that can move easily, enabling high electrical conductivity.
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Question 16
Which of the following is a good conductor of heat and electricity?
Graphite conducts electricity due to the presence of free electrons in its layered structure.
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Question 17
The various distribution circuits are connected in _____?
Distribution circuits are connected in parallel to ensure equal voltage supply across all loads and independent operation.
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Question 18
Which gas is commonly used in balloons and airships?
Helium is used because it is lighter than air and non-flammable, unlike hydrogen.
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Question 19
Which element has been found in D.G Khan of Pakistan is ____?
Uranium deposits have been discovered in D.G Khan, Pakistan, used for nuclear energy and research.
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Question 20
Non-conventional source of energy best suited for Pakistan is ____?
Pakistan has abundant sunlight throughout the year, making solar energy the most suitable non-conventional energy source.
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