Basic Science Quiz for Competitive Exams
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
Correct Answer : C
Explanation :
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
Correct Answer : A
Explanation :
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
Correct Answer : A
Explanation :
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
Correct Answer : B
Explanation :
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
Correct Answer : B
Explanation :
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
Correct Answer : D
Explanation :
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
Correct Answer : B
Explanation :
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
Correct Answer : D
Explanation :
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
Correct Answer : B
Explanation :
In India, the season is popularly considered to start in June and end in October. Kharif crops are usually sown at the beginning of the first rains during the advent of the south-west monsoon season, and they are harvested at the end of monsoon season (October–November).
What the following is not a unit of time?
(A) Leap year
(B) Lunar month
(C) Light year
(D) None of these
Correct Answer : B
Explanation :
EXPLANATION: From the above discussion, it is clear that Parsec and Light year are not units of time.
Showing page 2 of 4
enhttps://www.examsbook.com/basic-science-quiz-for-competitive-exams/242basic-science-quiz-for-competitive-examsAbout author
Rajesh Bhatia
A Writer, Teacher and GK Expert. I am an M.A. & M.Ed. in English Literature and Political Science. I am highly keen and passionate about reading Indian History. Also, I like to mentor students about how to prepare for a competitive examination. Share your concerns with me by comment box. Also, you can ask anything at linkedin.com/in/rajesh-bhatia-7395a015b/.
Read more articles