Option “C” is correct. Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and computing.
52.
What is the full form of “DNA”?
a.
b.
c.
d.
Option “B” is correct. DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mt DNA).
53.
What is the full form of “DDT”?
a.
b.
Dichlorodiphenyltrichloroethane
c.
d.
Option “B” is correct. Dichlorodiphenyltrichloroethane, commonly known as DDT, is a colorless, tasteless, and almost odorless crystalline chemical compound, an organochloride. Originally developed as an insecticide, it became infamous for its environmental impacts. DDT was first synthesized in 1874 by the Austrian chemist Othmar Zeidler.
54.
What is the full form of “CNG”?
a.
b.
c.
d.
Option “B” is correct. CNG (Compressed Natural Gas) is a mixture of hydrocarbons consisting of approximately 80 to 90 % methane in gaseous form. Because of its low energy density, it is compressed to pressure of 200 to 250 Kg/cm2 (to enhance the vehicle on-board storage in a cylinder), hence the name Compressed Natural Gas.
55.
What is the full form of “CCTV”?
a.
b.
c.
d.
Option “A” is correct. Closed-circuit television (CCTV), also known as video surveillance, is the use of video cameras to transmit a signal to a specific place, on a limited set of monitors. It differs from broadcast television in that the signal is not openly transmitted, though it may employ point-to-point (P2P), point-to-multipoint (P2MP), or mesh wired or wireless links. Even though almost all video cameras fit this definition, the term is most often applied to those used for surveillance in areas that require additional security or ongoing monitoring.
56.
What is the full form of “At”?
a.
Astatine
b.
c.
d.
Option “A” is correct. Astatine is a chemical element with the symbol At and atomic number 85. It is the rarest naturally occurring element in the Earth’s crust, occurring only as the decay product of various heavier elements. All of astatine’s isotopes are short-lived; the most stable is astatine-210, with a half-life of 8.1 hours.
57.
What is the full form of “ASA”?
a.
b.
c.
d.
Option “B” is correct. Aspirin, also known as acetylsalicylic acid (ASA), is a medication used to reduce pain, fever, or inflammation. Specific inflammatory conditions which aspirin is used to treat include Kawasaki disease, pericarditis, and rheumatic fever.
58.
What is the full form of “ASP”?
a.
b.
c.
d.
Aspartate
Option “D” is correct. Aspartate (ASP) is a vitamin-like substance called an amino acid. As a dietary supplement, aspartate is combined with minerals and is available as copper aspartate, iron aspartate, magnesium aspartate, manganese aspartate, potassium aspartate, and zinc aspartate.
59.
What is the full form of “API”?
a.
b.
c.
d.
Option “B” is correct. Aromatic polyimides (API) are a special group of engineering organic materials, which are classified as high performance polymers, because of their excellent thermal, mechanical and chemical properties
60.
What is the full form of “ADH”?
a.
b.
c.
d.
Option “A” is correct. Antidiuretic hormone (ADH) is a hormone that helps your kidneys manage the amount of water in your body. The ADH test measures how much ADH is in your blood. This test is often combined with other tests to find out what is causing too much or too little of this hormone to be present in the blood.
