891. Which of the following vitamins is synthesized in the body by intestinal bacteria?
A: Vitamins B12
B: Vitamins B1
C: Vitamins E
D: Vitamins K
892. In order to prevent the corrosion of iron pipes, they are often coated with a layer of zinc. This process is termed as_______?
A: Annealing
B: Electroplating
C: Galvanization
D: Vulcanization
893. Blood which the heart pumps to the lungs is_____?
A: Lymph fluid
B: Deoxygenated blood
C: Atria blood
D: Oxygenated blood
894. Which instrument is used to measure the power of an electric circuit?
A: Viscometer
B: Wavemeter
C: Wattmeter
D: None of these
895. Alzheimer’s disease in human beings is characterized by the degeneration of __
A: Nerve cells
B: Kidney cells
C: Liver cells
D: Spleen cells
896. Sound travels about ______times faster in water than in air.
A: 3
B: 2
C: 4
D: 5
897. The study of rearing fine and intelligent human beings through genetics is called_____?
A: Biotechnology
B: Eugenics
C: Cloning
D: Genealogy
898. Which of the following is referred to as a stranger gas as well?
A: Xenon
B: Argon
C: Neon
D: Nitrous oxide
899. In the entire universe, What is the most abundant element?
A: Hydrogen
B: Iron
C: Lead
D: Oxygen
900. In a nuclear reactor, which of the following acts as a moderator?
A: Radium
B: Ordinary water
C: Thorium
D: Heavy water
Admin