General Science (Biology-Physics-Chemestry) Question & Answers MCQ's




All Questions are from Year - 2018 or older

Question 121 :
The basic unit of a vertebrate kidney is the

  1. ureter
  2. nephron
  3. malpighian tubule
  4. islets of langerhans
  

Question 122 :
The life span of human WBCs is normally

  1. 12-days
  2. 80-90 days
  3. 100-120 days
  4. 20-30 days
  

Question 123 :
The period of pendulum depends upon

  1. mass
  2. length
  3. amplitude
  4. energy
  

Question 124 :
A person is standing in a elevator. In which situation he finds his weight less than actual when

  1. the elevator moves upward with constant acceleration
  2. the elevator moves downward with constant acceleration
  3. the elevator moves upward with uniform velocity
  4. the elevator moves downward with uniform velocity
  

Question 125 :
An amalgam of metal has which other element?

  1. C
  2. Ag
  3. Mg
  4. Hg
  

Question 126 :
Steel is preferred over iron in construction of ships because

  1. melting point of steel is higher than Iron
  2. steel is more uniform than Iron
  3. steel does not rust
  4. tensile strength of steel is not high
  

Question 127 :
In the absence of his tone proteins in prokaryotes the an ioinic charges of each inter nucleotide phosphate in DNA is neutralized by

  1. phospholipids
  2. polyamines
  3. polysaccharides
  4. glycelipids
  

Question 128 :
In summer the clocks

  1. become slow
  2. become fast
  3. gives correct time
  4. lose time
  

Question 129 :
Example of analogy is

  1. wings of bird and butterfly
  2. limbs of horse and man
  3. wings of bat
  4. None of the above
  

Question 130 :
A thick paste of cement sand and water is called

  1. concrete
  2. mortar
  3. slurry
  4. moderator
  

Question 131 :
The temperature of the Sun is measure with

  1. platinum thermometer
  2. gas thermometer
  3. pyrometer
  4. vapour pressure thermometer
  

Question 132 :
Cathode rays are produced when high electric voltage is applied to the gas held in a discharge tubeat a pressure of about

  1. 10-3 atm
  2. 10-5 atm
  3. 1 atm
  4. 100 atm
  

Question 133 :
Function of glomerulus in mammalian kidney is

  1. reasbsorption of salts
  2. urine formation through blood filtration
  3. urine collection
  4. all of the above
  

Question 134 :
Kidneys are not only organs of excretion. Their work is supplemented by

  1. liver
  2. heart
  3. large intestine
  4. skin
  

Question 135 :
Sodium is a

  1. silvery white and very soft metal
  2. colourless and hard metal
  3. silvery white and very hard metal
  4. colourless and very soft metal
  

Question 136 :
A bird flying in the sky has

  1. K.E. only
  2. P.E. only
  3. neither K.E. nor P.E.
  4. both K.E. and P.E.
  

Question 137 :
Which of the following is not a property of acids?

  1. all acids have a sour taste
  2. acids turn blue litmus red
  3. acids turn red litmus blue
  4. all acids form H+ ions in water
  

Question 138 :
The hot air balloon rises because it is

  1. denser
  2. less dense
  3. equally dense
  4. the given statement is wrong
  

Question 139 :
The two kidneys lie

  1. at the level of ovaries
  2. at the same level
  3. left kidney at a higher level than the right one
  4. right kidney at a higher level than the left one
  

Question 140 :
The physical state of water at 100°C is

  1. solid
  2. liquid
  3. gas
  4. plasma
  

Question 141 :
Excretion means

  1. removal of substances present in excess
  2. formation of those substances that have some role in the body
  3. removal of such substances that have never been part of the body
  4. all of the above
  

Question 142 :
Which of the following types of waves is different from others?

  1. Light waves
  2. X-rays
  3. Radio waves
  4. Sound waves
  

Question 143 :
Coal with largest C content is

  1. anthracite
  2. peat
  3. lignite
  4. bituminous
  

Question 144 :
Autosomes in humans are paired in

  1. 21 pairs
  2. 24 pairs
  3. 22 pairs
  4. 16 pairs
  

Question 145 :
The weight of a body would not be zero

  1. at the centre of the earth
  2. during a free fall
  3. in interplanetary space
  4. on a frictionless surface
  

Question 146 :
Gold is alloyed with which metal to make it harder?

  1. Cu
  2. Hg
  3. Ag
  4. C
  

Question 147 :
Plaster of Paris is obtained by heating

  1. gypsum
  2. limestone
  3. sodium carbonate
  4. calcium sulphate
  

Question 148 :
The most essential organ for fertilization is

  1. juicy fruit
  2. green sepals
  3. coloured petals
  4. mature ovule
  

Question 149 :
The basic unit of a vertebrate kidney is the

  1. ureter
  2. nephron
  3. malpighian tubule
  4. islets of Langerhans
  

Question 150 :
The amount of light entering the eye is controlled by the

  1. sclera
  2. cornea
  3. iris
  4. crystalline lens
  
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