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Class 7 MCQs for UPPSC (UP) Exam
It covers all Important Questions with answers on Class 7 for the UPPSC (UP) exam. The questions are based on important topics. Details about the questions:- Topic: Class 7
- Type of Questions: MCQs with solutions
- Number of Questions: 50
- You can attempt them on EduRev to score high in UPPSC (UP) exam.
Acid turns blue litmusA: OrangeB: PinkC: greenD: RedCorrect answer is 'D'. Can you explain this answer?
Acid turns blue litmus
A: Orange
B: Pink
C: green
D: Red
 | Jithin Chawla answered |
Acids turn blue litmus red. Litmus paper is used as indicator to check acids and bases.
Which of the following is a natural indicator- a)Turmeric
- b)Methyl orange
- c)Oxalic acid.
- d)Phenolphthalein
Correct answer is option 'A'. Can you explain this answer?
Which of the following is a natural indicator
a)
Turmeric
b)
Methyl orange
c)
Oxalic acid.
d)
Phenolphthalein
 | Sanjana Kumar answered |
Some of the natural indicators are red cabbage juice, onion paste, turmeric, lemon juice etc. Natural indicators are turmric,litmus,china rose etc are some natural indicators. Some Natural Indicators are red Cabbage juice,turmeric,china rose[hibiscus] and litmus.
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Physical and Chemical Changes, Class 7, Science. You can practice these practice quizzes as per your speed and improvise the topic. Q.Melting of ice is a- a)Both physical and chemical change
- b)Chemical change
- c)Periodic change
- d)Physical change
Correct answer is 'D'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Physical and Chemical Changes, Class 7, Science. You can practice these practice quizzes as per your speed and improvise the topic.
Q.
Melting of ice is a
a)
Both physical and chemical change
b)
Chemical change
c)
Periodic change
d)
Physical change
 | Maitri Sarkar answered |
Melting of ice is a physical change because it involves change only in the physical state of water: from ice in the solid state to water in the liquid state.
Moreover, no new chemical substance is formed in the process and this change is reversible. Water can be converted back into ice simply by freezing.
A device which prevents or allow the current to flow through it- a)Motor
- b)Terminal
- c)Conductor
- d)Switch
Correct answer is option 'D'. Can you explain this answer?
A device which prevents or allow the current to flow through it
a)
Motor
b)
Terminal
c)
Conductor
d)
Switch
 | Rohini Seth answered |
A circuit breaker can be used over and over again. The basic circuit breaker consists of a simple switch, connected to an electromagnet.
Generally electrical current requires a close path or circuit to flow, so when switch is off it won't flow. A switch prevents or allow the current to flow through it.
In insects, air enters the body through- a)Spiracles
- b)Gills
- c)Lungs
- d)Skin
Correct answer is option 'A'. Can you explain this answer?
In insects, air enters the body through
a)
Spiracles
b)
Gills
c)
Lungs
d)
Skin
| | Maitri Sarkar answered |
Insect bodies have openings, called spiracles, along the thorax and abdomen. These openings connect to the tubular network, allowing oxygen to pass into the body, regulating the diffusion of CO2 and water vapor.
Inhalation is the- a)Release of oxygen
- b)Intake of carbon dioxide
- c)Intake of oxygen
- d)Release of carbon dioxide
Correct answer is option 'C'. Can you explain this answer?
Inhalation is the
a)
Release of oxygen
b)
Intake of carbon dioxide
c)
Intake of oxygen
d)
Release of carbon dioxide
 | Prateek Sharma answered |
The part of breathing during which oxygen rich air is taken in is called inhalation.
A car is moving with 72 km/hrs. The speed of the car in m/s is- a)30 m/s
- b)20 m/s
- c)40 m/s
- d)25 m/s
Correct answer is option 'B'. Can you explain this answer?
A car is moving with 72 km/hrs. The speed of the car in m/s is
a)
30 m/s
b)
20 m/s
c)
40 m/s
d)
25 m/s
 | Meera Reddy answered |
We know ,
1 km=1000m , 1 hour=3600s
1km/h=1000/3600m/s=5/18m/s
72km/h=72×5/18m/s
=4×5m/s
=20m/s.
1 km=1000m , 1 hour=3600s
1km/h=1000/3600m/s=5/18m/s
72km/h=72×5/18m/s
=4×5m/s
=20m/s.
The excess of water absorbed plants by their roots gets evaporated through the process of- a)Absorption
- b)Elimination
- c)Transpiration
- d)Excretion
Correct answer is option 'C'. Can you explain this answer?
The excess of water absorbed plants by their roots gets evaporated through the process of
a)
Absorption
b)
Elimination
c)
Transpiration
d)
Excretion
 | Prisha Mehta answered |
Plants lose gallons of water every day through the process of transpiration, the evaporation of water from plants primarily through pores in their leaves. Up to 99% of the water absorbed by roots is lost via transpiration through plant leaves.
What percent of your body weight is water?- a)50%
- b)70%
- c)60%
- d)80%
Correct answer is option 'C'. Can you explain this answer?
What percent of your body weight is water?
a)
50%
b)
70%
c)
60%
d)
80%
 | Rithika Roy answered |
About 60% of our body consists of water. It forms the main constituent of cell and blood.
A wind vane is used to measure the- a)Air humidity
- b)Wind direction
- c)Air pressure
- d)Wind speed
Correct answer is option 'B'. Can you explain this answer?
A wind vane is used to measure the
a)
Air humidity
b)
Wind direction
c)
Air pressure
d)
Wind speed
 | Geetika Shah answered |
A wind vane is a simple device to know the direction of wind at particular time.
Which of the following is a reversible change?- a)Melting of ice
- b)Germination of seed
- c)Burning of matchstick
- d)Changing of milk into curd
Correct answer is option 'A'. Can you explain this answer?
Which of the following is a reversible change?
a)
Melting of ice
b)
Germination of seed
c)
Burning of matchstick
d)
Changing of milk into curd
 | Varun Kapoor answered |
Melting of ice is a reversible change while burning of matchstick, changing of milk into curd and germination of seed is chemical change.
What is the name of object through which light can pass?- a)Opaque
- b)Translucent
- c)Transparent
- d)Luminous
Correct answer is option 'C'. Can you explain this answer?
What is the name of object through which light can pass?
a)
Opaque
b)
Translucent
c)
Transparent
d)
Luminous
 | Sanaya Shah answered |
The object through which light can pass easily is called transparent object. Glass, water and thin plastic sheets are transparent object.
In Japan cyclone is known as- a)Storm
- b)Hurricane
- c)Typhoon
- d)Thunderstorm
Correct answer is option 'C'. Can you explain this answer?
In Japan cyclone is known as
a)
Storm
b)
Hurricane
c)
Typhoon
d)
Thunderstorm
 | Stuti Chakraborty answered |
In Japan cyclone is known as Typhoon. Japan is worst affected by regular typhoon.
Water is a/an- a)Element
- b)Mixture
- c)Solution
- d)Compound
Correct answer is option 'D'. Can you explain this answer?
Water is a/an
a)
Element
b)
Mixture
c)
Solution
d)
Compound
 | Anand Iyer answered |
Water is a compound as it contains hydrogen and oxygen in fixed ration by mass.
There is acute water shortage due to- a)Excessive population growth
- b)Climate change
- c)Global warming
- d)Excess evaporation
Correct answer is option 'A'. Can you explain this answer?
There is acute water shortage due to
a)
Excessive population growth
b)
Climate change
c)
Global warming
d)
Excess evaporation
 | Advait Pillai answered |
There is acute shortage of water throughout the world due to excessive population growth which leads to overuse and misuse of water.
Climate of a place do not depends on- a)Latitude
- b)Wind
- c)Humidity
- d)Longitude
Correct answer is option 'D'. Can you explain this answer?
Climate of a place do not depends on
a)
Latitude
b)
Wind
c)
Humidity
d)
Longitude
 | Palak Iyer answered |
The factors that determine the climate of a place are:
· Latitude
· Altitude
· Winds
· Distance from the sea
· Humidity and Ocean Currents
Longitude is not a factor that determines the climate of a place.
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Water A Precious Resource, Class 7, Science. You can practice these practice quizzes as per your speed and improvise the topic. Q.Ground water between two layers of rocks is called- a)Rain water
- b)Water table
- c)Aquifer
- d)Water level
Correct answer is 'C'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Water A Precious Resource, Class 7, Science. You can practice these practice quizzes as per your speed and improvise the topic.
Q.
Ground water between two layers of rocks is called
a)
Rain water
b)
Water table
c)
Aquifer
d)
Water level
 | Kiran Bajaj answered |
If groundwater is between two confined layers, it is called confined aquifer. If groundwater is not confined by an upper confining layer, it is unconfined equifer. If, on the other hand, groundwater is confined by two confining units (such as upper confining layer and lower confining layer), it is called confined aquifer.
Q. The centre of cyclone is known asa)Eyes of hurricanesb)Ear of hurricanesc)Middle of hurricanesd)Nose of hurricanesCorrect answer is option 'A'. Can you explain this answer?
 | Prashanth Sen answered |
The most recognizable feature found within a cyclone is the eye. They are found at the center and are between 20-50km in diameter. The eye is the focus of the cyclone, the point about which the rest of the storm rotates and where the lowest surface pressures are found in the storm
When two or more cells are joined together it forms a- a)Dynamo
- b)Battery
- c)Radio
- d)Transistor
Correct answer is option 'B'. Can you explain this answer?
When two or more cells are joined together it forms a
a)
Dynamo
b)
Battery
c)
Radio
d)
Transistor
 | Saikat Chawla answered |
Combination of two or more cells are joined together forms battery.
Gills are respiratory organs in- a)Fish
- b)Cockroach
- c)Amoeba
- d)Earthworm
Correct answer is option 'A'. Can you explain this answer?
Gills are respiratory organs in
a)
Fish
b)
Cockroach
c)
Amoeba
d)
Earthworm
 | Freak Artworks answered |
Gills are respiratory organs in fish. Gills intake oxygen from water.
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