11. What is the full form of “LORAN”?
a.
b.
c.
d.

Option “C” is correct.
LORAN, short for long range navigation, was a hyperbolic radio navigation system developed in the United States during World War II. It was similar to the UK’s Gee system but operated at lower frequencies in order to provide an improved range up to 1,500 miles with an accuracy of tens of miles.
12. What is the full form of “LPG”?
a.
b.
c.
d.

Option “C” is correct.
Liquefied petroleum gas (LPG, LP gas, or condensate), is a flammable mixture of hydrocarbon gases such as propane and butane.
LPG is used as fuel gas in heating appliances, cooking equipment, and vehicles. It is increasingly used as an aerosol propellant and a refrigerant, replacing chlorofluorocarbons in an effort to reduce damage to the ozone layer. When specifically used as a vehicle fuel it is often referred to as autogas.
13. What is the full form of “EMF”?
a.
b.
c.
d.

Option “A” is correct.
In electromagnetism and electronics, electromotive force (EMF) is the electrical action produced by a non-electrical source. Devices provide an emf by converting other forms of energy into electrical energy, such as batteries or generators. Sometimes an analogy to water pressure is used to describe electromotive force.
14. What is the full form of “HF”?
a.
b.
c.
d.

Option “D” is correct.
High Frequency is a popular skincare technique that is used to treat a variety of conditions, including acne management, enlarged pores, fine lines and wrinkles, and puffy or dark eyes.
15. What is the full form of “Au”?
a. Gold
b. Aluminium
c.
d.

Option “A” is correct.
Gold is a chemical element with the symbol Au (from Latin: aurum) and atomic number 79, making it one of the higher atomic number elements that occur naturally. In a pure form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal and a group 11 element. It is one of the least reactive chemical elements and is solid under standard conditions.
16. What is the full form of “CFC”?
a. Chlorofluorocarbon
b.
c.
d.

Option “A” is correct.
Chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs) are fully or partly halogenated paraffin hydrocarbons that contain only carbon (C), hydrogen (H), chlorine (Cl), and fluorine (F), produced as volatile derivatives of methane, ethane, and propane. They are also commonly known by the DuPont brand name Freon.
17. What is the full form of “BCG”?
a.
b.
c.
d.

Option “D” is correct.
Bacillus Calmette–Guerin (BCG) vaccine is a vaccine primarily used against tuberculosis (TB). It is named after its inventors Albert Calmette and Camille Guerin. In countries where TB or leprosy is common, one dose is recommended in healthy babies as soon after birth as possible. In areas where TB is not common, only children at high risk are typically immunized, while suspected cases of TB are individually tested for and treated.
18. What is the full form of “AW”?
a.
b.
c.
d.

Option “D” is correct.
Atomic weight is the relative weight of the atom on the basis of oxygen as 16. For a pure isotope, the atomic weight rounded off to the nearest integer gives the total number of neutrons and protons making up the atomic nucleus. These weights expressed in grams are called gram atomic weights.
19. What is the full form of “AFS”?
a.
b.
c.
d.

Option “D” is correct.
Atomic fluorescence spectrometry (AFS) is an analytical method used to determine the concentration of elements in samples. The sample is converted to gaseous atoms, and the element of interest is excited to a higher electronic energy level by a light source.
20. What is the full form of “AAS”?
a.
b.
c.
d.

Option “A” is correct.
Atomic absorption spectroscopy (AAS) and atomic emission spectroscopy (AES) is a spectroanalytical procedure for the quantitative determination of chemical elements using the absorption of optical radiation (light) by free atoms in the gaseous state. Atomic absorption spectroscopy is based on absorption of light by free metallic ions.
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