NAVY CIVILIAN ALL JOBS PAST PAPERS YEAR 2025
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چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
کون سے مرکبات آئسومرس ہیں؟
- CH2CH2CHO and CH3COCH3
- CH3OH and CH2CH2OH
- CH4 and CCl3
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Isomers are compounds with the same molecular formula but different structural arrangements.CH₂CH₂CHO (Propenal) and CH₃COCH₃ (Acetone) have the same molecular formula (C₃H₆O) but different structures, making them functional isomers.
ہائیڈروجن بانڈز میں _____ ہے؟
- Neutral nature
- Coordinate nature
- Electrostatic nature
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Hydrogen bonds are formed due to electrostatic attraction between a hydrogen atom and an electronegative atom (e.g., O, N, or F).This interaction is weaker than covalent bonds but stronger than van der Waals forces.
میں ایندھن کے طور پر کام کرنے والے یورینیم کا ایک آاسوٹوپ؟ ______
- U-240
- U-235
- U-238
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
U-235 is used as fuel in nuclear reactors due to its ability to undergo fission.It is the isotope of uranium that can sustain a chain reaction for energy production.
جب ایتھیل الکحل ابال کے عمل سے تیار ہوتا ہے تو ، گیس جو بلبلوں کی شکل میں فرار ہوتی ہے وہ _____ ہے؟
- Oxygen
- Hydrogen
- Carbon dioxide
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
During fermentation, yeast converts sugars into ethyl alcohol and releases carbon dioxide (CO₂) as a byproduct.The CO₂ escapes in the form of bubbles, making the process visible in brewing and baking.
فیہلنگ کا ٹیسٹ اور ٹولن کا ٹیسٹ ______ کی شناخت کے لئے استعمال ہوتا ہے؟
- Alcohols
- Carboxylic acid
- Aldehydes
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Fehling's test and Tollen's test are used for the identification of:
Aldehydes: Both tests are specific for detecting aldehydes, as aldehydes can be oxidized to carboxylic acids, producing a positive result.
Distinctive results:
Fehling's test: Forms a red precipitate of copper(I) oxide with aldehydes.
Tollen's test: Produces a silver mirror with aldehydes.
ڈی این اے سے وابستہ پائے جانے والے آئسومرز کی قسم _____ ہے؟
- Five
- One
- Two
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
DNA exhibits structural isomerism, mainly in the form of tautomeric isomers (keto-enol forms) and optical isomers in nucleotide bases.These isomers affect base pairing and hydrogen bonding, influencing DNA stability and replication.
ہوا کی قوت / رفتار کو ماپنے کا آلہ کون سا ہے؟
- Hygrometer
- Anemometer
- Bolometer
- Galvanometer
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
An anemometer is an instrument that measures wind speed.
This type of anemometer has a spinning wheel.
Additional Information:
A hygrometer is an instrument used to measure humidity
A salinometer is used to measure the salinity
A bolometer is used to measure the power of incident electromagnetic radiation
A barometer is used to measure air pressure in certain environment.
کافی کا سب سے بڑا پروڈیوسر مندرجہ ذیل میں سے کون ہے؟
- Columbia
- Brazil
- America
- Chilli
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Brazil is, quite simply, the largest coffee producer in the world.
Among hot beverages all over the world, coffee is one of the most widely consumed.
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RY 23-12-2022
مارگلہ ہلز، ایک پہاڑی سلسلہ، کس پہاڑی سلسلے کا حصہ ہے؟
- Karakoram
- Himalayas
- Toba Kakkar
- Suleman range
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
عابدہ پروین کس صنف کی معروف گلوکارہ ہیں؟
- Folk and Classical
- Pop and Rock
- Jazz and Blues
- Rap and Hip-hop
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
Abida Parveen is a Pakistani Sufi Muslim singer, composer, and musician.
She has been dubbed as the 'Queen of Sufi music'.
Received the President's Pride of Performance award in 1982 and Sitara-e-Imtiaz in 2005
She was born in Larkana, Sindh, Pakistan in 1954.
She began performing in the 1970s a
And became internationally prominent in the 1990s
