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Class 8 MCQs for UPPSC (UP) Exam
It covers all Important Questions with answers on Class 8 for the UPPSC (UP) exam. The questions are based on important topics. Details about the questions:- Topic: Class 8
- Type of Questions: MCQs with solutions
- Number of Questions: 50
- You can attempt them on EduRev to score high in UPPSC (UP) exam.
Which of the following tools would a farmer use to remove weeds from the field?- a)Hoe
- b)Axe
- c)Plough
- d)Cultivator
Correct answer is option 'A'. Can you explain this answer?
Which of the following tools would a farmer use to remove weeds from the field?
a)
Hoe
b)
Axe
c)
Plough
d)
Cultivator
 | Aditya Shah answered |
Option A: Hoe is used to remove weeds and to loosen the soil. Hoe works like a blade. Below is the image of Hoe.
Option B: Axe is used to cut the trees.
Option C: Plough is used for tilling the soil.
Option D: The cultivator is used for ploughing.
Option C: Plough is used for tilling the soil.
Option D: The cultivator is used for ploughing.
Thus, option A is correct.
Cutting mature crop manually or by a machine is called:- a)Irrigating
- b)Harvesting
- c)Breeding
- d)Weeding
Correct answer is option 'B'. Can you explain this answer?
Cutting mature crop manually or by a machine is called:
a)
Irrigating
b)
Harvesting
c)
Breeding
d)
Weeding
| | Anita Menon answered |
The process of cutting the mature crop manually or by machine is called harvesting. The crops are pulled out or cut close to the ground.
Gold : metal :: Silicon : _____a)non metalb)metalloidc)semi non metald)metalCorrect answer is option 'B'. Can you explain this answer?
| | Anita Menon answered |
Gold is metal and Silicon is a metalloid. Those elements that shows the property of both metal and non-metal are called metalloids.
From the following pick out, which is not the member of the solar system?a)A natural satelliteb)A cometc)An asteroidd)A constellationCorrect answer is option 'D'. Can you explain this answer?
| | Aditi Saxena answered |
A constellation is not the member of the solar system. These are the group of stars that forms a recognizable shape is known as Constellation.
Cotton and jute are the two common synthetic fibres.- a)True
- b)False
Correct answer is option 'B'. Can you explain this answer?
Cotton and jute are the two common synthetic fibres.
a)
True
b)
False
| | Amit Kumar answered |
"Cotton and jute” are the two common natural fibres not synthetic fibres.
The sun makes life possible by providing us with- a)Oxygen
- b)Water
- c)Heat and light
- d)Carbon dioxide
Correct answer is option 'C'. Can you explain this answer?
The sun makes life possible by providing us with
a)
Oxygen
b)
Water
c)
Heat and light
d)
Carbon dioxide
| | Anita Menon answered |
The Sun is the ultimate source of light and heat that support life. Life is possible on earth due to Sun. The energy required for all kinds of living organism come from Sun.
When non-metals react with water then - a)Hydrogen gas is formed
- b)Carbon dioxide gas is formed
- c)Non-metals do not react with water
- d)None of these.
Correct answer is option 'C'. Can you explain this answer?
When non-metals react with water then
a)
Hydrogen gas is formed
b)
Carbon dioxide gas is formed
c)
Non-metals do not react with water
d)
None of these.
| | Amita Verma answered |
Non-metals don't react with water but the non-metal oxides do react with water and they produce acids. One example is chlorine gas (chlorine oxide) reacts with clouds (water) to form acids which come down as acid rain.
The metal alloyed with gold for making jewellery :- a)copper
- b)zinc
- c)silver
- d)aluminium
Correct answer is option 'A'. Can you explain this answer?
The metal alloyed with gold for making jewellery :
a)
copper
b)
zinc
c)
silver
d)
aluminium
 | Sanjana Bose answered |
Copper alloys are metal alloys that have copper as their principal component. They have high resistance against corrosion. The best known traditional types are bronze, where tin is a significant addition, and brass, using zinc instead.
Can you explain the answer of this question below:Metals are solid except :
- A:
mercury
- B:
gallium
- C:
sodium
- D:
iodine
The answer is A.
Metals are solid except :
mercury
gallium
sodium
iodine
 | Madhurima Nair answered |
All metals are found in solid state at normal room temperature except mercury, which is liquid at room temperature.
Which of the following microorganism promotes the formation of curd?- a)Lactobacillus
- b)Amoeba
- c)Spiral bacteria
- d)Spirogyra
Correct answer is option 'A'. Can you explain this answer?
Which of the following microorganism promotes the formation of curd?
a)
Lactobacillus
b)
Amoeba
c)
Spiral bacteria
d)
Spirogyra
| | Amit Sharma answered |
Lactobacilli are the bacteria which are naturally present in the milk that convert the sugar(lactose) into lactic acid through the process of fermentation and that is seen in the form of curd.
Coke contains approximately _____ carbon.- a)98 percent
- b)95 percent
- c)90 percent
- d)99 percent
Correct answer is option 'D'. Can you explain this answer?
Coke contains approximately _____ carbon.
a)
98 percent
b)
95 percent
c)
90 percent
d)
99 percent
| | Ananya Das answered |
Coke is obtained from destructive distillation of coal. Coke contains approximately 99% carbon. It is used in blast furnace.
Sound is produced by- a)Heating
- b)Moving
- c)Cooling
- d)Vibration
Correct answer is option 'D'. Can you explain this answer?
Sound is produced by
a)
Heating
b)
Moving
c)
Cooling
d)
Vibration
 | Dhruv Gupta answered |
Sound is produced by vibration of object. Vibration creates disturbance in medium which reaches to observer ear through air, water or solid medium.
The property by which metals can be beaten into sheets is known as ___- a)Ductility
- b)Lusture
- c)Sonority
- d)Malleability
Correct answer is option 'D'. Can you explain this answer?
The property by which metals can be beaten into sheets is known as ___
a)
Ductility
b)
Lusture
c)
Sonority
d)
Malleability
 | Shubham Sharma answered |
Malleability is a physical property of metals that defines their ability to be hammered, pressed, or rolled into thin sheets without breaking. In other words, it is the property of a metal to deform under compression and take on a new shape.
Millions of stars together form- a)Solar system
- b)Galaxy
- c)Constellation
- d)Comet
Correct answer is option 'B'. Can you explain this answer?
Millions of stars together form
a)
Solar system
b)
Galaxy
c)
Constellation
d)
Comet
| | Sarita Verma answered |
A Globular cluster will contain between 10,000 to several million stars. An Open cluster will contain less than a few hundred stars. A Dwarf galaxy will contain several billion stars. A Galaxy will contain tens of billions of stars.
Metalloids are also known as :- a)minerals
- b)semi metals
- c)impure metals
- d)alloys
Correct answer is option 'B'. Can you explain this answer?
Metalloids are also known as :
a)
minerals
b)
semi metals
c)
impure metals
d)
alloys
 | Ashwin Jain answered |
Metalloids, also known as semimetals are elements containing properties similar and midway between metals and nonmetals. They are found to divide the periodic table between the metals on the left and the nonmetals on the right. Metalloids often have the following properties: could be dull or shiny.
In ancient cultures, process of separating grains from chaff is :- a)Buffering
- b)Harvesting
- c)Wind Winnowing
- d)None of these
Correct answer is option 'C'. Can you explain this answer?
In ancient cultures, process of separating grains from chaff is :
a)
Buffering
b)
Harvesting
c)
Wind Winnowing
d)
None of these
 | Akshita Bose answered |
Wind winnowing is an agricultural method developed by ancient cultures for separating grain from chaff. It is also used to remove hay and chaff or other pests from stored grain.
Any plant cultivated at a large stretch of land is called :- a)crop
- b)weed
- c)cereal
- d)fibre
Correct answer is option 'A'. Can you explain this answer?
Any plant cultivated at a large stretch of land is called :
a)
crop
b)
weed
c)
cereal
d)
fibre
 | Rohini Seth answered |
When plants of the same kind are grown and cultivated in one place on large scale, it is called a crop.
Example: Crop of wheat, crop of rice, etc.
Example: Crop of wheat, crop of rice, etc.
The brightest object in clear night sky is- a)Venus
- b)Sun
- c)Moon
- d)Star
Correct answer is option 'C'. Can you explain this answer?
The brightest object in clear night sky is
a)
Venus
b)
Sun
c)
Moon
d)
Star
 | Ritu Joshi answered |
The answer is a.
Venus is one of the brightest objects in the night sky. Venus is so bright because its thick clouds reflect most of the sunlight that reaches it (about 70%) back into space, and because it is the closest planet to Earth.
Venus is one of the brightest objects in the night sky. Venus is so bright because its thick clouds reflect most of the sunlight that reaches it (about 70%) back into space, and because it is the closest planet to Earth.
Which planets have huge red spot- a)Earth
- b)Venus
- c)Mars
- d)Jupiter
Correct answer is option 'D'. Can you explain this answer?
Which planets have huge red spot
a)
Earth
b)
Venus
c)
Mars
d)
Jupiter
 | Sounak Sengupta answered |
Great Red Spot on Jupiter. The Great Red Spot is a persistent anticyclonic storm on the planet Jupiter, 22 degrees south of the equator, which has lasted at least 340 years. The storm is large enough to be visible through Earth-based telescopes.
Microorganisms can be seen with naked eyes.- a)True
- b)False
Correct answer is option 'B'. Can you explain this answer?
Microorganisms can be seen with naked eyes.
a)
True
b)
False
 | Geetika Shah answered |
B is the correct option.Microbes are minute, unicellular organisms that are invisible to the naked eye. They are also known as microorganisms or microscopic organisms as they could only be seen under a microscope or magnifying glass.
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