Give an example of a physical change.
The boiling of water is an example of physical change, as there is no change in the chemical composition of... View Article
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Any circuit can have a charge of 8.4 x 10-18 C possible?
The answer would be yes and is dependent on the electrical circuit. Explanation Electrons travel around the circuit of electricity.... View Article
Name the strongest acid in the world.
Answer: A powerful acid with an acidity higher than pure sulfuric acid is known as a superacid. Because the pH... View Article
Smog is formed by the combination of?
The word ‘smog’ is a blend of smoke and fog. Smog is formed when the smoke particles combine with the already... View Article
Which is the smallest state in India?
India is the seventh-largest country in the world as per the area. India is politically divided into 29 states and... View Article
How to convert styrene to benzoic acid
Styrene is also known as phenyl ethene. It can be converted into benzoic acid by reacting with either KMnO4 or... View Article
What does lanthanoid contraction mean?
The steady decrease in atomic and ionic lanthanoid elements with increasing atomic number is called lanthanoid contraction. Explanation As we... View Article
Two properties of alpha particles are:
Alpha rays are positively charged particles. Alpha-particle is a highly active and energetic helium atom that contains two neutrons and... View Article
Why ZnO is yellow at high temperature?
When zinc oxide is heated strongly above 800-degree celcius, it turns yellow. After cooling down, the colour of zinc oxide... View Article
What happens in an oxidation reaction?
An oxidation reaction is one in which oxygen combines with an element or a compound. Oxidation is the loss of... View Article
What fraction of an hour is 40 minutes?
Answer: A fraction is considered to be the ratio of two numbers. The upper number is called Numerator, and the... View Article
How many types of emulsions are there?
Emulsions are of two types only. Emulsions and their types Emulsions are the mixtures of two or more type of... View Article
What is the other name for North star?
Pole Star. Polaris is currently the pole star of our blue planet Earth. Explanation North Star is the brightest star that appears nearest... View Article
What is the upper limit of Ionosphere?
The ionosphere is the ionized part of Earth’s upper atmosphere, from about 48 km (30 mi) to 965 km (600... View Article
What are the methods of polymerisation?
Following are the methods of polymerization: i) Addition polymerization: In this polymerisation method, the same monomer gets added to the... View Article
What is the proper sequence in mitosis?
There are two main events in mitosis – karyokinesis or duplication of the nucleus, followed by cytokinesis or division of... View Article
What is the empirical formula of Fe2O3?
Since the formula of Fe2O3 cannot be reduced to a simpler formula which represents the whole number ratio of various... View Article
The last element of actinide series is:
In the second f transition series, also known as the actinoid series, the filling up of 5f orbitals begins with... View Article
What is the value of Avogadro’s number?
Answer: The number of units in one mole of any substance is known as Avogadro’s constant or Avogadro number. The... View Article
What is the causative agent of anthrax?
Anthrax is caused by infection with Bacillus anthracis, a hardy, spore-forming bacterium that can survive in extreme conditions for a long time. What are... View Article
