- Cathode Ray Oscilloscope
- Cathode Ray Oscar
- Common Ray Oscilioscope
- None of these
- a
-
It shows signals and Voltage.
Fredinand Braun invented CRO in 1897.
Everyday Science MCQs
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Leukemia is a disease of the:
- Blood
- Skin
- Lungs
- Heart
- a
DNA was discovered by:
- Watson & Crick
- Jacob & Monod
- Khorana
- Baltimore
- a
-
DNA is related to Biochemistry. DNA stands for Deoxyribonucleic
Watson & Crick discovered the Chemical structure of DNA in 1953.
DNA was discovered by Swiss Chemist Friedrich in 1860.
Which of the following helps in clotting of blood?
- Vitamin C
- Vitamin A
- Vitamin K
- None of these
- c
-
Vitamin C is necessary for growth, development and repair of all body tissues.
Vitamin A helps to maintain healthy teeth, Skelton, soft tissue and skin.
The most abundant element found in the earth’s crust is:
- Nitrogen
- Carbon
- Oxygen
- Hydrogen
- c
-
Oxygen 46.6%
Silicon 27.7%
Aluminium 8.1%
Which of the following types of forests account for the most of the total forest area in the world?
- Littoral
- Deciduous
- Broad-Leaved
- None of these
- c
-
The forest area of any country should be consist of 25% of total area.
Pakistan's total forest area is 5.2% of total area.
First human heart transplant operation conducted by Dr. Christian Bernard on Louis Washkansky , was conducted in:
- 1957
- 1947
- 1967
- 1948
- c
-
He was a South African Cardiac Surgeon.
Galileo was an Italian astronomer who:
- Developed Telescope
- Discovered Satellites of Jupiter.
- Discovered that movement of pendulum produces a regular time.
- All of these above.
- d
The “Pomology” is a branch of science that deals with:
- The study of cultivation of Fruits
- The study of Birds
- The study of Poisons
- The study of insects
- a
-
USDA established the division of “Pomology” in 1886.
The Disease Diphtheria affects …. In the Human Body:
- Throat
- Kidneys
- Intestine
- Joints
- a
-
Its an Infectious disease.