FPSC INTELLIGENCE OFFICER PAST PAPER HELD IN 2020
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
جب لفٹ نیچے کی طرف تیز ہوتی ہے تو اس شخص کا ظاہر وزن ______ ہوتا ہے؟
Zero
Less than the actual weight
Greater than the actual weight
None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
When an elevator accelerates downward , the normal force (apparent weight) decreases.
Thus, the person feels lighter than their actual weight.
مقناطیسی آکسائڈ کا کیمیائی فارمولا ______ ہے؟
He3O2
He2O3
Fe3O4
Fe2O3
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Fe3O4 occurs as a mineral with a chemical name Iron (II, III) oxide.
It is also known a s Magnetite or Magnetic oxide
واٹر گیس ______ کا مرکب ہے؟
Carbon dioxide and hydrogen
Carbon monoxide and nitrogen
Carbon monoxide and hydrogen
Carbon dioxide and nitrogen
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Explanation
Water gas is a mixture of Carbon Monoxide (CO) and Hydrogen (H2) .
Water Gas is formed when steam is passed over red-hot coke.
Formula: H₂O
Boiling point: 100°C
اٹھارہ سینٹی گریڈ پر پانی کا ڈائی الیکٹرک مستقل ______ ہے؟
70
80
84
None of these
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Explanation
The dielectric constant of water at around 18°C is approximately 80 .
This high value makes water an excellent polar solvent for ionic and polar compounds.
زمین پر تازہ پانی کی کتنی فیصد موجود ہے؟
0.04%
2.5%
2.2%
3%
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Explanation
3% of Earth's water is fresh water.
2.5% of that fresh water is unavailable because it is:
Locked in glaciers and polar ice caps Present in the atmosphere and soil Too deep underground to extract affordably Only 0.5% of Earth's water is available as usable fresh water for human use.
ماحول کا سب سے سرد خطہ ______ ہے؟
Mesosphere
Stratosphere
Troposphere None of these
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Explanation
The mesosphere is the coldest layer of the atmosphere, with temperatures dropping as low as -90°C .
It lies above the stratosphere and below the thermosphere .
مندرجہ ذیل بیان الکائنس کے لئے درست نہیں ہے؟
They burn to form CO2
They do not perform Bayer's Test
They undergo addition reaction
None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
They do not perform Baeyer's Test statement is not true because alkynes do perform Baeyer's Test , which detects unsaturation (like double or triple bonds).
In Baeyer's Test , potassium permanganate gets decolorized if alkynes are present, indicating a reaction.
نمازِ خسوف ______ کے موقع پر ادا کی جاتی ہے؟
Solar eclipse
Shortage of rain
Lunar eclipse
None of the above
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Explanation
Salat-e-Khasoof is performed on the occasion of the Lunar eclipse ( چاند گرہن )
It occurs in two or Four zakaah prayer
It is a Nafli , not an obligatory prayer.
Additional information:
Salat ul Kusuf ( نمازكسوف )is a two or Four-zakaah prayer performed during a solar eclipse سورج گرہن ,
متبادل کرنٹ کو ڈائریکٹ کرنٹ میں تبدیل کس کے ذریعے کیا جاتا ہے؟
Anemometer
Battery
Rectifier
None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
A rectifier is an electrical device that converts Alternating Current (AC) into Direct Current (DC).
It works by allowing current to flow only in one direction using diodes.
زمین اور ماحول پر پانی سمیت زمین کے تقریبا %50 پرت ______ ہے؟
Oxygen
Salts
Plasma
None of these
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Explanation
Priestly discover oxygen in 1776 .
Oxygen makes up about 46-50% of the Earth's crust by weight, mainly in the form of oxides and silicates .
It is also a major component of water (H₂O).
It is abundant in the atmosphere as O₂ .
