- Green House Effect
- Noise Pollution
- Carbon Dioxide
- Nitrogen
- C
-
After dissolution of Carbon Dioxide forms Carbonic Acid.
2023
All Solved Past Papers 2023 are included in this section. All Solved MCQs of 2023 of All Departments, All Posts and All Testing Services are also included in this section of ETEST Academy’s Website.
The atomic number of Phosphorus (P) is 15. It has ____ elections in its outer most shell.
- 03
- 05
- 07
- 09
- B
Surveillance satellites are used _____
- Monitor Global Activities
- Monitor Traffic Activities
- Monitor Weather Activities
- Monitor Military Activities
- D
-
Surveillance Satellites are used to monitor unauthorized activities such as illegal crossing or smuggling.
Whooping cough is caused by:
- Bordettela
- Pertussis
- Both A & B
- Streptococcus
- C
-
Whooping Cough is also called Pertussis.
This disease is caused by Bordetella Pertussis.
This disease is found in humans only.
Rate of flow of electric charge is called:
- Voltage
- Current
- Electric Potential Energy
- Electromotive Force
- B
-
Unit of Electric Current is Ampere.
The symbol of Ampere is A.
Ozone layer blocks ____ coming from sun.
- UV rays
- X-Rays
- Gamma Rays
- Infrared Rays
- A
-
Ozone formula is O3.
Ozone is an organic molecule.
The molar mass of Ozone is 48.
We use ammeter to measure the _____
- Current
- Voltage
- Electromotive Force
- Charge
- A
-
Ammeter is used to measure current (AC & DC).
AC stands for Alternative Current.
DC stands for Direct Current.
Ammeter was invented by Friedrich Dexler in 1884.
A light year is distance _____
- Travelled by Earth in one year
- Of Galaxy from Earth
- Travelled by the nearest star in one year
- Travelled by light in one year
- D
-
A light year is a unit of distance.
Light travels at a velocity of 300,000 Km/sec.
One light year is equal to 9.5 X 1012 Km.
Most prominent gas which leads to acidification is _____
- Hydrogen
- Oxygen
- Sulfuric Dioxide
- Nitrogen
- C
-
Sulfuric Dioxide gas usually emitted from the industries.
Sulfuric Dioxide is main cause of Acidic Rain.
The planet ____ is heaviest planet in solar system?
- Mars
- Serum
- Jupiter
- Uranus
- C
-
Saturn is the lightest planet in our solar system.