ALL FPSC PAST PAPERS MCQS OF EVERYDAY SCIENCE 1998 TO 2019
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
ہندوستان میں پہلی اوپن ہارٹ سرجری کے آپریشن کی تاریخ تھی۔
- June 20, 1990
- August 12, 1991
- February 15, 1961
- None
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
The first open-heart surgery in India was performed on February 16, 1961
By Dr. K.N. Dastur at BYL Nair Hospital in Mumbai.
He used a heart-lung machine developed with the help of engineers at the National Steel Company.
The surgery was performed on a 19-year-old girl named Hemlata
زمین کی سطح کا کتنا حصہ پانی سے ڈھکا ہوا ہے؟
- 23%
- 83%
- 94%
- 71%
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Surface Coverage: 71% is water, mostly saltwater.
- Ocean Percentage: Oceans hold ~96.5% of the total water.
- Freshwater vs. Saltwater: 96.5% is saline (oceans), and only a small fraction is freshwater.
Last updated by NA on 28April 2026
- The density of milk remains white
- the density of milk remains unchanged
- The density of milk decreases
- The density of milk increases
- None of the above
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
When cream is separated from the milk, the density of the milk increases.
The pH range of fresh milk is 6.4 to 6.8.
