The commercial cork is obtained from a) Teak b) Banyan c) Quercus suber d) Peepal
The commercial cork is obtained from the evergreen oak tree, commonly called Quercus suber or the cork oak. It is... View Article
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What is the average binding energy per nucleon over a wide range?
The average binding energy per nucleon is the total binding energy divided by the number of nucleons. For Na atom,... View Article
What type of oxides are formed when non-metals react with oxygen explain with an example
When non-metals react with oxygen acidic oxides or neutral oxides are formed. Example: When hydrogen reacts with oxygen neutral oxide... View Article
What is the difference between a breed and a species give an example for each
The difference between a breed and a species are<ul>A group of animals related by descent and homogeneous in most characters... View Article
Water is broken down into its constituent elements ———–and—————
Water is broken down into its constituent elements hydrogen and oxygen when it undergoes the process of electrolysis. Electrolysis of... View Article
The raw material used in the preparation of synthetic fibres is a) Gasoline b) Coal c) Petrol d) Petrochemical
Option d) Petrochemical.
Multiple root cap occurs in a) Maize b) Gram c) Mango d) Pandanus
Option d) Pandanus. Pandanus is also known as Screw pine. The root cap of this plant features the smooth cap... View Article
A transistor is essentially a) a voltage-operated device b) resistance operated device c) a current operated device d) power-driven device
Option c) a current operated device. A transistor is a current operating device in which the emitter current controls the... View Article
Indian agriculture is typically characterised as a) land-scarce and labour surplus economy b) land scarce and labour scarce economy c) land surplus and labour scarce economy d) land surplus and labour surplus economy
Option a) land-scarce and labour surplus economy.
The average kinetic energy of an ideal gas per molecule in SI unit at 25 degree C will be a) 6.17×10−20J b) 7.16×10−20J c) 6.17×10−21kJ d) 6.17×10−21J
Option d) 6.17×10−21J.
The water found below the water table is called a) Underwater b) Seawater c) Groundwater d) Saltwater
Option c) Groundwater. Groundwater is usually found under the ground in the cracks and spaces in soil, sand, and rock.
Two identical metal plates are given positive charge Q1 and Q2 (
Option a) (Q1−Q2)/(2C).
An air bubble in a glass slab with a refractive index of 1.5 (near-normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in cm) of the slab is
Given, l = length of the slab x = position of air bubble from one side the total apparent length... View Article
If the radius of Br− ion is 0.182 nm, how large can a cation be fit in its tetrahedral holes? a) 0.0753 nm b) 0.092 nm c) 0.125 pm d) 0.554 pm
Option a) 0.0753 pm For tetrahedral void, \(\begin{array}{l}\frac{r+}{r-}=0.225-0.414\end{array} \) \(\begin{array}{l}r_{+}= 0.414 – r_{-}\end{array} \) 0.414×0.182 nm =0.0753 nm Hence, we... View Article
The acceleration of a particle as seen from two frames S1 and S2 have an equal magnitude of 5 ms−2. a) The acceleration of frame S2 with respect to S1 be 0 or 10 ms−2 b) The acceleration of frame S2 with respect to S1 lies between 0 and 10 ms−2 c) The frames may be moving with respect to each other but neither should be accelerated with respect to the other. d) The frames must be at rest with respect to each other.
Option b) The acceleration of frame S2 with respect to S1 lies between 0 and 10 ms−2.
The substance a when dissolved in solvent b shows the molecular mass corresponding to a3. The van”t Hoffs factor will be:
Van’t Hoff factor, where i=Normal mol.mass/Observed mol.mass As the solute associates in solution, and gives mass A3 i=A/3A=1/3
What is a certificate of commencement of business
Commencement of Business Certificate is the official declaration that the Director of the Company needs to file with the Registrar... View Article
Sketch and label the figure of the funaria plant
Funaria is a moss genus which belongs to Funariaceae family. Funaria is a plant that grows upto 3–5 cm. Funaria... View Article
Bacterial cell divides every one minute. It takes 15 minutes a cup to be one-fourth full. How much time will it take to fill the cup?
Given, At 15th minute – 1/4 cup Since generation time is 1 minute At 15th minute – 1/2 cup At... View Article
Deionised water is obtained in ion exchange method. If this is true enter 1, if false enter 0.
It is true. Hence 1 is the answer. Deionized water is obtained through the ion exchange method. Deionization is a... View Article
