Name the largest artery in the human body?
Answer: Aorta An Aorta is an elastic and distensible artery. The artery that supplies oxygenated blood to the rest of... View Article
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Bicollateral vascular bundles are found in family (1) Malvaceae (2) Musaceae (3) Solanaceae (4) Cucurbitaceae
Answer: (4) Bicollateral vascular bundles are visible in the members of Cucurbitaceae.It is a kind of conjoint vascular bundle in... View Article
The equivalent weight of K2Cr2O7 in acidic medium is expressed in terms of its molecular weight (M) as (1) M/3 (2) M/4 (3) M/6 (4) M/7
Answer: (3) An equivalent weight of a solution is defined as the molecular weight of the solute divided by the... View Article
A doctor/nurse/health-worker is exposed to more sick people than others in the community. Find out how she/he avoids getting sick herself/himself.
Answer: People who are working in the field of medical like nurse/doctors are exposed to more ill people in society.... View Article
Who is regarded as the ‘father of taxonomy’?
Answer: Carolus Linnaeus Taxonomy is the study of naming, comparing and sorting organisms that involve all the plants, animals and... View Article
Classical smog is (1) Dark brown smog (2) Yellow brown smog (3) Los angeles smog (4) Smog with secondary pollutants
Answer: (1) Smog is the most common type of atmospheric pollutant which affects a major portion of the world. The... View Article
How does the atmospheric pressure change with altitude? (1) Altitude increases, pressure decreases (2) Altitude decreases, pressure increases (3) Altitude increases, pressure increases (4) Altitude is independent of pressure
The correct answer is (1) Altitude increases The atmospheric pressure varies with altitude as the density of air decreases as we... View Article
The general formula of alkynes is : (1) Cn H2n+2 (2) Cn H2n (3) Cn H2n-2 (4) Cn Hn
Answer: (3) Alkynes are unsaturated hydrocarbons which consist of at least one triple bond between carbon atoms.l. The general molecular... View Article
Name an enzyme present in the saliva of human beings?
Answer: The enzyme found in human’s saliva is ptyaline. Ptyaline is also known as salivary amylase. Secreted ptyaline in the... View Article
Which cells of Crypts of Lieberkuhn secrete antibacterial Lysozyme’ Which cells of Crypts of Lieberkuhn secrete antibacterial Lysozyme? (1) Argentaffin cells (2) Paneth cells (3) Zymogen cells (4) Kupffer cells
Answer: (2) Kupffer cells are liver cells of phagocytic origin. Zymogen cells are the cells which produce enzymes. Argentaffin cells... View Article
Which of the following salt gives a crimson red colour in flame test? (1) BaCl2 (2) CaCl2 (3) BeCl2 (4) SrCl2
Answer: (4) In the flame test, strontium chloride (SrCl2) will give crimson red colour. The reason behind this excitation of... View Article
List the hormones secreted by pancreas.
Answer: The pancreas is an abdominal organ located behind the stomach and surrounded by spleen, liver and small intestine. It... View Article
What would be the Ψ pof a flaccidcell? (1) Positive (2) Negative (3) Zero (4) Cannot be determined
Answer: (3) Pressure potential is the positive pressure developed by the osmotic entry of water into a system. The magnitude... View Article
Living cells were first observed by (1) Robert Hooke (2) Schleiden (3) Schwann (4) Leeuwenhoek
Answer: (4) Robert Hooke, a scientist, was the first person in 1665 to discover the presence of cells, using a... View Article
What do you mean by Gestation period?
Answer: The development of the fetus from the time of fertilization in the womb of its mother is called the... View Article
The probability of a sure event is
Answer: The value of the probability of an impossible event = 0 The value of the probability of a sure... View Article
The diagram shows liquid in a burette and in a measuring cylinder.Which row shows the readings for the burette and the measuring cylinder? (1) Burette – 27.8 , measuring cylinder – 42 (2) Burette – 27.8 , measuring cylinder – 44 (3) Burette – 28.2 , measuring cylinder – 42 (4) Burette – 28.2 , measuring cylinder – 44
Answer: (2) A measuring cylinder is also known as graduated cylinder or mixing cylinder is commonly used in the laboratory... View Article
Give reason : Graphite is used as lubricant.
Answer: Graphite is a type of crystal carbon and a half-metal along with being one of the renowned carbon allotropes.... View Article
The most abundant metal in the earth’s crust is (1) Oxygen (2) Aluminium (3) Calcium (4) Gold
Answer: (2)Aluminium In the earth crust, the oxygen percentage is 46.6, but oxygen belongs to the non-metal group. The most... View Article
What is the role of decomposers in the ecosystem?
Answer: An ecosystem is characterized as a community of lifeforms that competes with non-living components and interacts with one another.... View Article
