What happens to the ionization enthalpy among the 3d transition series?
Among the 3d transition series, the ionization enthalpy increases gradually within the period, but the relative increase is not sharp.... View Article
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Which one of the following is paramagnetic? i) O3 ii) N2 iii) CO iv) O2
O2 is paramagnetic Explanation It is paramagnetic because it has two unpaired electrons. The atomic orbitals of the O atoms... View Article
Explain how animals in Vertebrata are classified into further subgroups.
Animals in Vertebrata are classified into five classes: (i) Class Pisces: This class includes fish such as Scoliodon, tuna, rohu,... View Article
Differentiate between internal fertilization and external fertilization.
The life process of initiating the development of a new entity of its kind through the fusion of male and... View Article
How are fats digested in our bodies? Where does this process take place?
Digestion is the process of breaking large, insoluble food molecules into smaller molecules for absorption into the bloodstream. This process... View Article
What happens in Tyndall effect with the colloidally suspended particles?
In Tyndall effect the colloidally suspended particles trace out the path of a strong beam of light because of scattering... View Article
How to calculate the limiting molar conductivity of strong electrolytes?
Limiting molar conductivity of strong electrolytes is calculated using Ë„m vs (c)½ graph by extrapolating the graph to c =... View Article
What is the charge present on the hydrogen when hydrogen bond is formed?
In a hydrogen bond, hydrogen carries a partial positive charge and the electronegative element carries a partial negative charge. Hydrogen... View Article
Name the type of mixture that is formed by the grains containing stones.
A heterogeneous mixture has a non-uniform composition. This type of mixture is formed by the grains containing stones. Mixture A... View Article
How do Mendel’s experiments show that traits are inherited independently?
Mendel is known as the father of genetics. Mendel’s laws are Law of Dominance, Law of Segregation and Law of... View Article
Name an inorganic compound which has highest lowering of vapour pressure.
Barium Chloride on dissociation gives 2 moles of Chloride ions and one mole of Barium ions. Hence, the total number... View Article
From where can we find the conventional direction of an electric current?
The conventional direction of electric current is from positive to negative terminal. Or, in other words, from higher potential to... View Article
How many lines can pass though: (a) One given point? (b) Two given points
Answer: A line can be defined as a straight set of points that extend in opposite directions. It has no... View Article
Where do plants get each of the raw materials required for photosynthesis?
Answer: In the presence of sunlight, green plants use photosynthesis to synthesize nutrients from carbon dioxide and water. It includes... View Article
Name the radiation which is responsible for the maximum biological damage.
Gamma rays. This is because Gamma rays have immense penetrating power. So it can penetrate the inner cells of the body,... View Article
Name the motion that is not explained by the Universal law of gravitation.
The motion of electrons in an atom is governed by electrostatic force. Universal Law of Gravitation Every object in the... View Article
The C-H bond distance is longest in: i) C2H2 ii) C2H2Br2 iii) C2H4 iv) C2H6
Answer: Option (d) C2H6 Explanation Bond length decreases with an increase in bond multiplicity. The higher the s character implies that... View Article
Why are traits acquired during the lifetime of an individual not inherited?
The acquired traits do not affect an individual’s genetic makeup; hence, they are not transferred to or inherited by future... View Article
Find the focal length of a lens of power -2.0 D. What type of lens is this?
Power of lens (P) = -2.0 D P = 1/f or f = 1/m f = 1/-2.0 = -0.5 m... View Article
What is the end product obtained when hydrogen chloride reacts with metals?
Hydrogen chloride reacts with metals to form chlorides with the liberation of hydrogen gas. Explanation If the metal reacts with... View Article
