PAKISTAN AIR FORCE PAF PAST PAPERS, SYLLABUS
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
پی قسم کے سیمی کنڈکٹر جرمینیم کرسٹل کو حاصل کرنے کے لیے، اسے غیر ملکی ایٹموں کے ساتھ ڈوپ کیا جانا چاہیے جن کی ویلینسی _____ ہے؟
- 4
- 2
- 3
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
P-type semiconductors are created by doping with trivalent atoms (valency 3) like boron or indium.It create "holes" by accepting electrons.These holes act as charge carriers, giving the semiconductor its p-type behavior.
- On
- Up
- Out
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The phrasal verb "carry out" means to perform or execute a task or experiment.Correct sentence: "The teacher asked the students to carry out the experiment."استاد نے طالب علموں سے تجربہ کرنے کو کہا۔
- Disavow
- Renounce
- By law
- Espouse
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- The synonym of "de jure" is "by law."
- "De jure" refers to something that is legally recognized.
- It regardless of whether the practice exists in reality.
- Pronoun
- Adjective
- Adverb
- Preposition
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
"Quickly" modifies the verb "do," describing how the action should be performed.Adverbs often end in "-ly".It provide information about the manner, place, time, frequency, or degree of the action.
- With
- In
- Of
- Over
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Sick of means اکتا جانا
"I am sick of this nasty job."
We use sick of to express being tired, bored, or fed up with something.
- New moon
- Half moon
- Full moon
- Quarter moon
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A lunar eclipse occurs when the Earth comes between the Sun and the Moon,
And the Earth's shadow falls on the Moon.
- This can only happen during a full moon.
- Come to the point
- Tell the story briefly
- Miss the main points
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The idiom 'To cut long story short' means مقصد کی بات کرنا
- BOTTLE
- CUP
- TUB
- FUNNEL
- BOWL
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Explanation
A funnel is a tube or pipe that is wide at the top and narrow at the bottom,
used for guiding liquid or powder into a small opening.
- Cat
- Elephant
- Snake
- Dog
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Explanation
Unlike the others, a snake is a reptile.
The rest (Cat, Elephant, Dog) are mammals.
آبشار کی وجہ سے بننے والی توانائی کونسی ہے؟
- Potential energy
- Kinetic energy
- Both A and B
- None of these
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Explanation
At the top of the waterfall, energy is stored in the form of gravitational potential energy
but when it falls, it gets converted from potential to kinetic energy
Potential energy due to the object's height above the Earth is converted to kinetic energy as it falls
ND13-5-2023
