Which process is responsible for the glow that appears in bubbles that emerge from water?
(A) due to reflection of light
(B) due to refraction of light
(C) due to total internal reflection of light
(D) due to scattering of light
Due to total internal reflection light gets trapped inside the bubble, making it shine.
Parsec is the unit?
(A) Distance
(B) Time
(C) Brightness of light
(D) Magnetic force
Parsec or parallactic second or is a unit of distance. It is defined as the distance at which one AU (astronomical unit) subtends an angle of one arc second, and is equal to 3.26 light years. Or, it is the unit of length which is used to measure the large distances of celestial bodies outside the solar system.
The blood of which of the following animals is similar to that of humans?
(A) Chimpanzee
(B) Rhesus monkey
(C) Gorilla
(D) Baboon
The following animals have blood groups that are similar to humans: Chimpanzees. Gorillas. Orangutans.
Which chromosome determines the male sex in humans?
(A) X-chromosome
(B) Y-chromosome
(C) W-chromosome
(D) Z-chromosome
Each person normally has one pair of sex chromosomes in each cell. The Y chromosome is present in males, who have one X and one Y chromosome, while females have two X chromosomes. Identifying genes on each chromosome is an active area of genetic research.
The number of ossicles in the ear of mammals is
(A) 2
(B) 3
(C) 4
(D) 5
The mammalian middle ear contains three ossicles, which move the vibrations of the eardrum into waves in the liquid and membrane of the inward ear. There are three ossicles in every ear : Malleus, Incus, Stapes. As we have a couple of ears, so altogether there are 6 ossicles, or 3 sets of ossicles.
What is the unit of work done?
(A) Watt
(B) Decibel
(C) Ampere
(D) Joule
The SI unit of work is joule (J). Joule is defined as the work done by a force of one newton causing a displacement of one meter. Sometimes, newton-metre (N-m) is also used for measuring work.
Identify an example of organisms that are free-swimming and bottom-dwelling forms.
(A) Phytoplankton
(B) Zooplankton
(C) Fungi
(D) Jellyfishes
The organisms that are categorized are planktons, nektons, and benthos. Planktons are free-floating microorganisms; active swimmers are the nektons, and the bottom-dwelling organisms are known as benthos. Therefore, the correct order of the correct answer will be plankton, nekton, and benthos.
The SI unit of acceleration is ______.
(A) m2/s
(B) m2/s2
(C) m/s
(D) m/s
The unit of acceleration is meter per second square. It is represented by . m / s 2 .
In Indian agriculture, the period from July to October is called?
(A) Rabi season
(B) Kharif season
(C) Pre-Kharif season
(D) Season of recession
What the following is not a unit of time?
(A) Leap year
(B) Lunar month
(C) Light year
(D) None of these
EXPLANATION: From the above discussion, it is clear that Parsec and Light year are not units of time.
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