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ALL SCIENCE QUESTIONS ASKED IN SSC SELECTION POST PHASE IX 2021 EXAM


 ALL SCIENCE
QUESTIONS 

1.          
Algae  would 
generally  NOT  be  found  residing 
in  which  of 
the  following? 

 Dry 
stone

2.          
Ascariasis,  a 
disease  is  caused 
due  to  which 
of  the  following 
helminths  is  known 
to  be pathogenic  to 
man? 

 Common 
round  worms

3.          
Different  species 
of  Plasmodium  (a 
tiny  protozoan)  are 
responsible  for  different 
types of  malaria,  of 
these,  malignant  malaria 
which  is  the 
most  serious  is 
caused  by  ______. 

 plasmodium 
falciparum

4.          
The exaggerated
response of the  ______ system to
certain antigens  present in the
environment is called allergy

 immune

5.          
Which  of 
the  following  is 
an  example  of 
a  natural  pesticide? 

 Rotenone

6.          
Which  of 
the  following  is 
NOT  a  characteristic  of 
Amphibia  class  of 
animals? 

 Amphibians’ 
eyes  are  without  eyelids.

7.          
Which  of 
the  following  is 
NOT  a  characteristic  of 
Aves  (birds)  class 
of  animals? 

The
hind  limbs  are 
modified  into  wings.

8.          
Which  of 
the  following  is 
NOT  a  disease 
caused  by  bacteria? 

 Malaria

9.          
What 
is  the  term 
used  for  a 
non-living  part  of 
an  ecosystem  that 
shapes  its environment? 

 Abiotic  factor

10.      
Communicable
diseases are indirectly transmitted by way of what are known popularly as ‘5
Fs’. Which of the following does not figure among them ?

Fungi

11.      
According  to 
the  Central  Pollution 
Control  Board  of 
India,  particulate  sizes 
of diameter  ______  micrometres 
are  responsible  for 
causing  the  greatest 
harm  to  human health. 

 equal  to 
or  less  than 
2.5

12.      
Which 
of  the  following 
does  NOT  figure 
among  the  Five 
Kingdom  Classification
proposed  by  RH 
Whittaker  (1969)? 

Euglena

13.      
Who 
among  the  following 
scientists  is  famous 
for  her  notable 
work  on  sugarcane 
and eggplant? 

Janaki  Ammal

14.      
The 
rate  of  change 
of  ______   of 
an  object  is 
its  acceleration. 

 velocity

15.      
The  unit 
of  electrical  resistance 
in  the  metre-kilogram-second  system 
is  called  a/an ______. 

 ohm

16.      
The  thickness 
of  the  ozone 
in  a  column 
of  air  from 
the  ground  to  the  top 
of  the atmosphere  is 
measured  in  terms 
of  ______. 

 Dobson 
Units  (DU)

17.      
Which  of 
the  following  has 
the  same  dimension 
as  pressure? 

 Stress

18.      
Which  of 
the  following  is 
a  unit  of 
energy? 

 kilowatt-hour

19.      
Which of the following
parasites are responsible for malaria in humans ?

Plasmodium

20.      
Which of the
following vitamins are normally made in the kidneys ?

Vitamin
D

 

21.      
Which of the
following protein is found in plasma ?

Albumin

22.      
Which of the
following group of animals are marine and characterised by a spiny skin ?

Phylum
Echinodermata

23.      
Elephantiasis, also
known as lymphatic filariasis, is caused by____.

Parasitic
worms

24.      
Which of the
following terms, also known as hypersensitivity, is used to describe a
condition in which the human body has an exaggerated response to a substance
(e.g. food or drug)?

Allergy

25.      
Which of the
following is not a barrier under innate immunity ?

Mental
barriers

26.      
Each step or level
of a food chain forms a trophic level. Which of the following is at the first
trophic level of the said food chain ?

Autotrophs
or the producers

27.      
In biological
terminology, the naked – seeded plants are called _______.

Gymnosperms

28.      
Malaria disease is
caused by which of the following type of protozoa ?

Plasmodium

29.      
Which of the
following metal traces were found in chemical analyses of both Omani copper
and Harappan artefacts suggesting a common origin ?

Nickel

30.      
Acid rain is caused
by the chemical reaction that begins when compounds like sulphur dioxides and
_____ are released into the air ?

Nitrogen
oxides

31.      
Which of the
following gases is not included in greenhouse gases ?

Nitrogen

32.      
Ozone depletion from
the atmosphere becomes the reason for causing which of the following diseases
?

Skin
cancer

33.      
Which of the
following metals has the highest electrical and thermal conductivity ?

Silver

34.      
An apparatus used
only for receiving the sounds generated by underwater objects is called a
passive _____ system.

Sonar

35.      
What is the name of
the device for measuring some characteristics of a liquid, such as its
density or specific gravity ?

Hydrometer

36. The
instrument used to measure either direct or alternating electric current in
amperes is called.

Ammeter

37. ‘Force’ divided by ‘mass’ is equal to

 
acceleration

38. Impulse is defined as the change in

 
linear momentum

39. Which of the following devices is used for
measuring distance?

 
Odometer

40. In which of the following years did Albert
Einstein receive the Nobel Prize in Physics?

 
1921

41. Which of the following is NOT a vector
quantity?

 
Kinetic energy

42. The weight of an object of mass 1 kg is
approximately equal to ______ newton.

 
10

43. The square root of the dimension of energy
divided by mass is the same as that of

 velocity

44. The Technology of production of ultra-high magnetic
fields is based on which of the following scientific principles?

 Superconductivity

45. Typhoid fever could be confirmed by which of
the following tests?

 
Widal Test

46. Which of the following is an example of the
phylum Mollusca?

 
Octopus

47. What is the full form of LED, which are among
the most widely used of all the different types of semiconductor diodes
available today and are commonly used in TV and colour displays?

 Light Emitting Diode

48. ______ is used to remove the temporary and
permanent hardness of water.

 
Sodium carbonate

49. Honey is composed of water and two types of
sugars ______ and glucose.

 
fructose

50. How many atoms of hydrogen are there in
Ammonium Chloride?

 
Four

51. How many hydrogen atoms does a molecule of
acetic acid contain?

 Four

52. How many hydrogen atoms does a molecule of
calcium hydroxide contain?

 
Two

53. How many hydrogen atoms does a molecule of
Phosphoric Acid contain?

 
3

54. How many oxygen atoms are there in a molecule
of sodium peroxide?

 
Two

55. What is the atomic number of lithium?

 3

56. Which of the following is NOT a chemical
compound?

 Air

57. Which of the following is the first step in
drinking water treatment?

 
Coagulation and Flocculation

58. Yeast is a microbe that uses simple
carbohydrates to produce ______ in a chemical reaction.

 carbon dioxide

59. Cassowary, Kiwi and Rhea are examples of

 
Aves

60. During the process of respiration in plants,
which of the following is NOT released as a product?

 Oxygen

61. Human red blood cells are formed mainly in the
______.

 
bone marrow

62. In the movement of the tectonic plates when
one plate plunges beneath another it is called ______.

 subduction

63. Mosaic is a viral disease that affects ______.

 
plants

64. One of the most infectious human ailments, the
common cold is caused by which of the following group of viruses?

 Rhinovirus

65. Respiratory failure is a condition in which
your blood doesn’t have enough ______ or has too much ______.

  oxygen; carbon dioxide

66. Roots that grow out from the tree trunk and
which helps to support the tree are called

 buttress root

67. Sugarcane feedstock is readily fermented into
______.

 
ethanol

68. The following are three processes of
reproduction in plants

(a)  Vegetative,

(b)  Sexual,

(c)  
Asexual

Which of them is adopted by algae?

 
(a), (b) and (c)

69. The most unique characteristic of animals of
the Mammalia class is the presence of

 mammary glands

70. Which of the following is NOT a hermaphrodite?

 
Queen honey bee

71. Which of the following statements is INCORRECT
about redworms ?

Redworms need dry surroundings for
their survival

72. Which of the following statements is INCORRECT
regarding DNA?

 The bases found in DNA come in only three
varieties- adenine, cytosine and guanine.

73. Which of the following vitamin dependent
carboxylase is found in the liver?

 Vitamin K

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