What are copper ions?
1) Copper ions are one of the essential element for the cellular physiology. They are required for essential celluar processes... View Article
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Differentiate between parenchyma cells and collenchyma cells
(a) Parenchyma cells originate from the ground while collenchyma cells originate from the procambium. (b) Parenchyma cells belong to living... View Article
A pencil when dipped in water in a glass tumbler appears to be bent at the interface of air and water Will the pencil appears to be bent to the same extent if instead of water we use liquid like kerosene or oil
The pencil appears to be bent when it is kept in a glass tumbler with water due to refraction of... View Article
How does reproduction help in providing stability to population of species
Reproduction provides stability to the population of species by giving birth to young ones. The rate of birth and the... View Article
Name a metallic nitrate that is not to be used for the preparation of nitric acid in lab
Sodium nitrate is not used in the preparation of nitric acid in the lab
State energy transformation in ac generator and DC motor
In AC generators, mechanical energy is transformed into electrical energy as the coil rotates within the magnetic field. In DC... View Article
The sold price of 12 eggs is equal to cost price of 16 eggs. Find the profit percentage
Let selling price of 12 eggs = x Then the cost price of 16 eggs = x The selling price... View Article
Name the type of mirror used as sallow view of mirror in vehicle
Convex mirror is used in vehicles
A person of mass 50 kg stands on a weighing scale oil a lift if the lift is descending with a downward acceleration of 9 ms^-2. what would be the reading of the weighing scale
It can be considered that reading of the weighing scale is equal to the apparent weight of the person. Therefore,... View Article
Definition of principal focus of concave and convex lens
Answer: The principal focus is defined as the point where a beam parallel to the principal axis appears to diverge... View Article
What are the difference between animals belonging to the aves group and those in the mammalian group
Answer: The difference between aves and mammals are as follows: Aves Mammals Aves have their body covered in feathers. Bodies... View Article
What is the valency of Carbon: +4 or -4?
The atomic number of carbon is 6 with the electronic configuration of carbon is: 1s2 2s2 2p2. For carbon the... View Article
Drive an expression for the magnetic moment of an electron revolving around the nucleus in term of its angular momentum what is the direction of magnetic moment of the electron with respect to its angular momentum
We know that, \(\begin{array}{l}\mu = iA\frac{ev}{2\pi r}\times \pi r^{2}=\frac{evr}{2}\end{array} \) As l = mvr \(\begin{array}{l}vr= \frac{1}{m}\end{array} \) \(\begin{array}{l}\underset{\mu }{\rightarrow}=-\frac{e\underset{l}{\rightarrow}}{2m}\end{array} \)... View Article
Can resistance value become zero during short circuit?
During short circuit, the resistance becomes minimum as the amount of current passing through the circuit increases.
Explain how to use solar cooker?
Following are the steps to use a solar cooker: (a) The solar cooker must be placed under the sunlight one... View Article
What is the function of slip ring,contact brush of an AC generator and split ring,brushes of an electric motor?
The function of slip ring in an AC generator is that these are the hollow rings that are connected to... View Article
Why do we usually get muscle cramp after doing heavy exercise? How can we get relief from it
Muscle cramps occur when there is anaerobic respiration taking place in our muscles. During anaerobic respiration, glucose gets converted into... View Article
What is solar cooker?
A solar cooker is defined as a cooker that uses direct sunlight as the energy for cooking and heating of... View Article
How is left hand rule and principle of an electric motor related?
The principle of an electric motor is based on the magnetic effect of electric current. The current-carrying loop in an... View Article
UPSC 2020: Weekly GK and Current Affairs Quiz Mar 28 – Apr 03
UPSC 2020: Weekly GK and Current Affairs Quiz Mar 28 – Apr 03 with Multiple Choice Questions and answers for... View Article
