The layer which protects the earth from ultraviolet radiation is called.
A. Ozone layer B. Stratosphere layer C. Oxygen layer D. Green house
The brightest planet of our solar system is.
A. Mars B. Mercury C. Venus D. None of these
Quick Response (QR code) reader is an example of
A. Output device B. Input device C. Input and output device D. None of these
The scientists who proposed the DNA model in 1953 were.
A. Heber and Bosch B. Watson and Crick C. Wuhan D. Xian
Rickets is caused due to deficiency of.
A. Vitamin A B. Vitamin C C. Vitamin D D. Vitamin B
Which of the following is not a bacterial disease?
A. Influenza B. Typhoid C. TB D. Diarrheas
Ringworm disease is caused by.
A. Parasites B. Bacteria C. Red D. Fungi
Diabetes is caused due to the malfunctioning of.
A. Liver B. Pancreas C. Spleens D. None of these
Which gases are used in gas-welding?
A. Oxygen, acetylene, and argon B. Oxygen, acetylene, and Nitrogen C. Air and acetylenes D. None of these
A process, in which gas is converted into liquid is called.
A. Evaporation B. Sublimation C. Condemnation D. None of these