How can you test to show that when a metal reacts with water, hydrogen gas is produced? A) A lit splint produces a squeaky pop B) Is cold to the touch C) Relights a glowing splint D) Puts out a burning splint Which is NOT a physical...
ncertconcepts01
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November 2023
The elements argon, krypton, and xenon are all non-metals. What property would these elements have in common? A) Good conductor of thermal energy B) Shiny, lustrous surface C) Poor conductor of electricity D) Soft and malleable No spam Spam answers are be reported immediately Correct explanation...
ncertconcepts01
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November 2023
Juan observes these properties of an unknown substance. The substance is white, has a crystaline structure, dissolves in water and burns when a flame is applied. What is a chemical property of the substance? A) color B) crystaline structure C)dissolves D) burns No spam Correct answer is...
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November 2023
What element in air reacts with Iron to make Iron Oxide? A) Carbon B) Helium C) Oxygen D) nitrogen No spam Correct answer is required 5 pts will be awarded Spam answers will be immediately reported
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November 2023
Which of the following is action at a distance force? A . Muscular force B . Frictional force C. Magnetic force D . Spring force No spam Correct explanation and answers only
ncertconcepts01
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November 2023
Diagram is shown Options are A. Pachmarhi biosphere reserve B. Satpura national park C. Pachmarhi wildlife sanctuary D. Bori sanctuary
ncertconcepts01
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November 2023
Read the following statements and Statement - I: A total of 55 rock shelters (rock paintings) have been identified in National Park. Statement - II: Indian sanctuaries have unique landscapes, broad level forests, Bucks lands in deltas of big rivers. A) Both statements-I and II are true b) Statement-I...
ncertconcepts01
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November 2023
A die has six faces having dots 1,2,3,4,5,6 respectively. What is the sum of dots on two faces of a die? Correct answer will get 55 points
ncertconcepts01
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November 2023
66 Assertion (A): All thermoplastics are biodegradable polymers Reason (R) Thermoplastics are easily deformed by heat. Hence, one can change the shape of the plastic. al Both assertion and reason are correct, and reason is the correct explanation of the assertion B. Assertion is incorrect and reason is correct
ncertconcepts01
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November 2023
The loss of an item is equal to the selling price of the itemWhich of these relation is not correct? a) The selling price of the item is twice the cost price b) The cost price of the item is twice the selling price c) The profit...
ncertconcepts01
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November 2023
Find mass Acceleration 2m/s^2 Correct explanation and answer be marked as brainliest No spam
ncertconcepts01
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November 2023
96. Choose the incorrect set of threatened wild animals. a) Black buck & white eyed buck c) Chinkara & Blue - Bull b) Golden cat & Pink headed duck d) Python & rhinoceros
ncertconcepts01
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November 2023
Assertion (A): Animals whose numbers are diminishing to a level that they extinction are known as endangered animals. Reason (R): Bigger animals are much more in danger of becoming extinct than the smaller animals. a) Both A & R are correct and R is the correct explanation of A. B)Both...
ncertconcepts01
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November 2023
Combine is used for ____ A. Harvesting B. Threshing C. Winnowing D. Both a and b No spam Correct explanation with each options and answer is marked as brainliest as well as awarded 8 pts
ncertconcepts01
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November 2023
Which of the following is true w.r.t. deforestation? a) Clearing of grass land and using it for planting trees. b) Clearing of forests and using that land for others purposes. c) Planting trees at forests for animal food purpose D) Natural calamities such as floods can cause deforestation
ncertconcepts01
Asked:
November 2023
Consider the following statements. 1. Cellulose is a polymer made up of large number of glucose units. II. Polymers prepared by using raw materials of petroleum origin are called petrochemicals III. Acrylic is a synthetic fibre used to prepare shawls and sweaters. a) Only I is correct c) Only...
ncertconcepts01
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November 2023
85. Assertion (A): All microorganisms (Bacteria, Fungus, Virus) can be effected by antibiotics. Reason (R) : Antibiotics however, are not effective against to cold and influenza virus a) Both A & R are correct and R is correct explanation of A. b) Both A & R are correct but R...
ncertconcepts01
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November 2023
Assertion (A) Natural and petrol can not be prepared in laboratory Reason (R): Petrol and CNG are highly inflammable substances A) Both assertion and reason are correct, and reason is the correct explanation of the assertion b)Both assertion and reason are correct, but reason is not the...
ncertconcepts01
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November 2023
In natural reforestation there is an excepted role of human beings true or false
ncertconcepts01
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November 2023
There are ____ countries in the world where population is not growing fast Answer should be in determiners
ncertconcepts01
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November 2023
Correct answer and explanation required The number of sides of a regular polygon is double that of the another and the magnitude of its angle is also double that of the other. Then the number of sides of polygon gre a) 12 b) 10 c) 8...
ncertconcepts01
Asked:
November 2023
62. Assertion (A)Rayon is a semisynthetic polymer. Reason (R): Rayon is obtained from chemical treatment of cellulose. al Both assertion and reason are correct, and reason is the correct explanation of the assertion b) Both assertion and reason are correct, but reason is not the correct...