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Published on: 04/11/2019
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Questions + Answers key
Take MCQ Science Test
1.
A piaries are established for
flower production
apple production
honey production
fish production
2.
The variety of bee that is commonly used for commercial honey production is
Apis cerana indica
A. dorsata
A.florae
A. mellifera
3.
For mixed cropping which combination of crop generally not used?
Wheat + maize
Wheat + gram
Wheat + mustard
Groundnut + sunflower
4.
Which of the following does not contain nitrogen?
Nucleic acids
Proteins
Alkaloids
Fats
5.
Which one of the following is not an air pollutant?
Oxides of nitrogen
Oxides of sulphur
Hydrocarbons
Carbon dioxide
6.
In large parts of India rains are mostly brought by the
south-west or north-east
south-west or north-west
south-west or north-south
south-west or south-east
7.
The main cause of depletion of ozone layer is excessive use of
CO2
CFCs
NO2
SO2
8.
Ozone hole was first observed over
Antartica
Australia
Arctic
America
9.
Which one of the following is a greenhouse gas?
Nitrogen
Carbon monoxide
Carbon dioxide
Oxygen
10.
Acid rain is caused by
oxides of carbon only
oxides of nitrogen only
oxides of sulphur only
all of these
11.
The gas which causes greenhouse effect is
methane
water vapours
carbon dioxide
all of these
12.
Who were awarded nobel prize for discovery of peptic ulcer causing bacterium Helicobacter pylori?
Marshall
Leuwenhock
Warren
Both (a) and (b)
13.
Diseases where microbes are the immediate causes are called
non-infectiuos
acute
chronic
infectious
14.
Antibiotics work against
bacteria
virus
elephantiasis
dengue
15.
Which one of the following disease is spread by microbes?
High blood pressure
Diabetes
Sleeping sickness
Peptic ulcer
16.
Which one of the following is dangerous for individual health?
Garbage thrown is streets
Open drainage
Stagnant water around our living
All of these
17.
Antibiotic penicillin act against bacteria by
Killing the bacteria
neutralizing the bacteria
blocking biochemical pathways important for bacteria
None of the above
18.
Which one of the following is not the common disease caused by viruses?
Common cold
Influza
Dengue fever
Typhoid
19.
The protozoa organism responsible for sickness is
Ameba
Entamoeba
Plasmodium
Trypanosoma
20.
The product of time period and frequency is
zero
unity
infinity
none of these
21.
A tuning fork is vibrating in air. The number of compressions going past a given point per second is the
wavelength
time-period
frequency
amplitude
22.
The reciprocal if frequency is
amplitude
wavelength
time-period
wave velocity
23.
In gases a sound wave is
transverse only
longitudinal only
both transverse and longitudinal
neither transverse nor longitudinal
24.
If a stone of mass m falls a vertical d, the decrease in gravitational potential energy is
mg/d
md2/2
mgd
md/g
25.
Joule is the unit of
power
work
momentum
force
26.
If an elevator is moving vertically up with an acceleration a, the force exert on the floor by a passenger of mass m is
ma
mg
mg-ma
m(g+a)
27.
If the distance force of masses is doubled, the force between them will be
\(\frac{1}{4}\)times
4 times
\(\frac{1}{2}\)times
2 times
28.
What is the momentum of an object of mass m, moving with a velocity v?
\((mv)^2\)
\(mv^2\)
\(\frac {1}{2} mv^2\)
mv.
29.
A block of mass M is pulled with a force F along a smooth horizontal surface with a rope of mass m. The acceleration of the block will be
\(\frac F M\)
\(\frac F m\)
\(\frac {F} {M+m}\)
\(\frac {F}{M-m}\)
30.
\(N \quad kg^{-1}\) is a unit of
velocity
acceleration
force
none of these
31.
momentum gives a measure of
mass
weight
velocity
quantity of motion
32.
A rider on a horseback falls back when horse starts running all of a sudden because
rider is taken back
rider is suddenly afraid of falling
inertia of rest keeps the upper part of body at rest whereas lower part of the body moves forward with the horse.
none of the above
33.
The distance travelled by a freely falling body is proportional to the
mass of the body
square of the time of fall
square of the acceleration due to gravity
time of fall
34.
The slope of speed-time graph gives
speed
velocity
acceleration
momentum
35.
When a graph of one quantity versus another results in a straight line, the quantity are
both constant
equal
directly proportional
inversely proportional
36.
A wooden slab starting from rest slides down a 10 m long inclined plane with an acceleration of 5 \(ms^{ -2 }\) what would be its speed at the bottom of the inclined plane?
10 \(ms^{ -1 }\)
12 \(ms^{ -1 }\)
10 \(cms^{ -1 }\)
12 \(cms^{ -1 }\)
37.
Deceleration of a body is expressed in
m
\(ms^{ -1 }\)
\(ms^{ -2 }\)
\(-ms^{ -2 }\)
38.
Members of which of the following groups are exclusively marine and have water tube system to move around?
Nematoda
Annelida
Arthropoda
Planaria
39.
Which one of the following belongs to coelenterata?
Sycon
Hydra
Spongilla
Planaria
40.
Fern is an example of
thallophyta
bryophyta
pteridophyta
phanerogams
41.
Which one of the following is the example of Thallophyta?
Ulothrix
Moss
Fern
Marchantia
42.
Which of the following statement is not true for fungi?
They can be saprophyte.
They can be prokaryote
Their cell wall is formed of chitin.
They may be symbiotic.
43.
The organisms of kingdom protista are
unicellular and prokaryotic
multicellular and prokaryotic
unicellular and eukaryotic
multicellular and eukaryotic
44.
In which one of the following character, members of the Kingdom Monera differ from other kingdoms?
Lack of defined nucleus
Presence of membrane-bound cell organelles
Multicellular design of the body
Presence of true nucleus
45.
The five kingdom classification is based on complexity of
cell structure
body of organisms
mode of nutrition
cell structure, body organisation and mode of nutrition
46.
In Whittaker's classification, the unicellular organisms having various membrane-bound cell organelles are included in the Kingdom of
monera
protista
fungi
plantae
47.
Whittaker classified all organisms into
five kingdoms
four kingdoms
three kingdoms
two kingdoms
48.
Which of the following cells help sieve tubes to translocate food?
Xylem parenchyma
Phloem parenchyma
Phloem fibre
Companion cell
49.
Aerenchyma is richly found in
xerophytes
mesophytes
halophytes
hydrophytes
50.
The complete breakdown of glucose in presence of oxygen in a cell takes place in
mitochondria
ribosome
chloroplast
Golgi apparatus
51.
Which one of the following is a correct electronic configuration of sodium?
2,8
8,2,1
2,1,8
2,8,1
52.
When an atom form ions
no. of protons changes
no. of electron changes
no. of neutrons changes
both no. electrons and protons changes
53.
There is no between valency and electrons except in case of
elements of group 2
elements of group 3
elements of group 4
elements of group 5
54.
The nucleus of an atom of phosphorus is represented as \(_{15}^{31}P\).The number of protons, neutrons and electrons in the atom of phosphorus are respectively
15,31,15
15,15,16
15,31,16
15,16,15
55.
\(\alpha\)-particle is made up of
2 electrons and 2 protons
2 protons and 2 neutrons
2 electrons and 2 neutrons
helium atoms
56.
Take the statement which is not correct:
When a beam of light is passed through a colloidal solution, the path of light gets illuminated.
When an electric current is passed through a colloidal solution, colloidal particles move towards the same charged electrodes.
When an electric current is passed through a colloidal solution, colloidal particles move towards the oppositely charged electrodes.
When an electric current is passed through an electrolyte solution, particles move towards the oppositely charged electrodes.
57.
select a heterogeneous mixture of the following:
Air
NaCL in water
Emulsion
Alloy
1.
(c)
honey production
2.
(d)
A. mellifera
3.
(a)
Wheat + maize
4.
(d)
Fats
5.
(d)
Carbon dioxide
6.
(a)
south-west or north-east
7.
(b)
CFCs
8.
(a)
Antartica
9.
(c)
Carbon dioxide
10.
(d)
all of these
11.
(b)
water vapours
12.
(d)
Both (a) and (b)
13.
(d)
infectious
14.
(a)
bacteria
15.
(c)
Sleeping sickness
16.
(d)
All of these
17.
(c)
blocking biochemical pathways important for bacteria
18.
(d)
Typhoid
19.
(d)
Trypanosoma
20.
(b)
unity
21.
(c)
frequency
22.
(c)
time-period
23.
(b)
longitudinal only
24.
(a)
mg/d
25.
(b)
work
26.
(d)
m(g+a)
27.
(a)
\(\frac{1}{4}\)times
28.
(d)
mv.
29.
(c)
\(\frac {F} {M+m}\)
30.
(b)
acceleration
31.
(d)
quantity of motion
32.
(c)
inertia of rest keeps the upper part of body at rest whereas lower part of the body moves forward with the horse.
33.
(b)
square of the time of fall
34.
(c)
acceleration
35.
(c)
directly proportional
36.
(a)
10 \(ms^{ -1 }\)
37.
(c)
\(ms^{ -2 }\)
38.
(d)
Planaria
39.
(a)
Sycon
40.
(c)
pteridophyta
41.
(a)
Ulothrix
42.
(b)
They can be prokaryote
43.
(c)
unicellular and eukaryotic
44.
(a)
Lack of defined nucleus
45.
(d)
cell structure, body organisation and mode of nutrition
46.
(b)
protista
47.
(a)
five kingdoms
48.
(d)
Companion cell
49.
(d)
hydrophytes
50.
(a)
mitochondria
51.
(d)
2,8,1
52.
(b)
no. of electron changes
53.
(d)
elements of group 5
54.
(d)
15,16,15
55.
(b)
2 protons and 2 neutrons
56.
(c)
When an electric current is passed through a colloidal solution, colloidal particles move towards the oppositely charged electrodes.
57.
(c)
Emulsion
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