Humidity is the amount of which substance present in air?
Humidity is the amount of water vapour present in air.
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What is the order of ionization enthalpy for B, Al and Ga?
B < Al < Ga The trend in ionization enthalpy is because there is decrease in Ionisation enthalpy from B... View Article
Which compounds show negative deviation from Raoult’s law?
On mixing acetone and chloroform, hydrogen bond is formed between them. Due to this vapour pressure of the solution formed... View Article
What is the size of the image formed by the convex mirror?
The size of the image formed by the convex mirror is always smaller than the size of the object irrespective... View Article
Identify the type of reaction: HCl + NaOH → NaCl + H2O
A neutralization reaction is a reaction in which an acid reacts with a base to form salt and water. HCl... View Article
Centered unit cells can be classified into how many types?
There are 3 types of cubic centred unit cells i.e. body centred, face centred and end centred.
What is the new location of smaller ion in Frenkel defect?
In Frenkel defect the smaller ion is dislocated from its normal site to an interstitial site.
State the effect of temperature on density of a substance.
Density of a substance decreases with increase in temperature because increases the volume.
CuSO4 (aq) + Zn (s) → Cu (s) + ZnSO4 (aq) is an example of
CuSO4 (aq) + Zn (s) → Cu (s) + ZnSO4 (aq) is an example of displacement reaction. A displacement reaction is... View Article
What is the coordination number of atoms in hcp structure?
6 in one plane and 3 above and 3 below so each sphere is surrounded by 12 spheres.
Name the metal which is present as impurity in “sapphire”.
Sapphire is the impure form of alumina which contains cobalt (Co) as impurity.
Which part of the ear amplifies the vibrations of eardrum?
The three bones hammer, anvil and stirrup amplify the vibrations of eardrum.
The modern periodic table is divided into how many blocks?
The modern periodic table is divided into 4 blocks i.e s, p, d and f block.
List the factors on which the resistance of a wire depend.
Resistance of a wire depends on the Length and cross-section of the wire.
Value of absolute Zero on Celsius scale is equal to _____.
Answer: Value of absolute temperature on the Celsius scale is equal to -273.15 oC. Kelvin scale Kelvin scale is the... View Article
Name the delta formed by the Ganga and Brahmaputra rivers.
Sundarbans delta is formed by the Ganga and Brahmaputra rivers. Ganges-Brahmaputra Delta The Ganges-Brahmaputra Delta (also known as the Brahmaputra... View Article
What is the number of atoms (z) in simple cubic unit cell?
The number of atoms (z) in a simple cubic unit cell is one. Explanation: A crystal lattice comprises several unit... View Article
On which laws is the principle of rocket propulsion based?
The propulsion of all rockets is explained by the same physical principle of Newton’s third law of motion. It states that every motion has an equal and... View Article
Which is India€™s position in the world production of tea?
India is the second largest producer of tea after China.
What is the boiling point of water on the Farenheit scale?
On Farenheit scale, the boiling point of water is 2120F
