A large part of Africa lies in which side of the hemisphere?
Answer: Large part of Africa lies in the Northern Hemisphere. Africa Africa is the world’s second-largest continent. Africa covers for 20% of... View Article
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Which of the following outer electronic configuration represent argon? (1) ns2 (2) ns2np6 (3) ns2np5 (4) ns2np4
Answer: (2) ns2 np6 Argon is a chemical element in the eighteen group of the periodic table. It is the third most... View Article
Explain the eye infection trachoma with symptoms and causes.
Answer: Trachoma is an eye infection caused by the bacteria called Chlamydia trachomatis. This infection is contagious and spreads through... View Article
Which force operates among the heavier elementary particles?
Answer: The strong interaction is the attractive force that brings quarks (elementary particles) together to form nucleons (protons and neutrons).... View Article
Give an example of a compound which can form linkage isomer.
Answer: [Cr(H2O)5SCN]3+ can form a linkage isomer, as here more than one atom of a monodentate ligand may function as... View Article
What is the importance of childhood immunisation programmes?
Answer: What is immunization? Immunization is the ability of the body to produce an immune response either naturally or by... View Article
What are elementry reactions involving two reactants called?
Elementary reactions involving two reactants called Bimolecular reactions. Elementary reactions An elementary reaction is a reaction that occurs in a... View Article
The general electronic configuration of p-block elements is _______
The general electronic configuration of p-block elements is ns2np1-6. p-block elements The general electronic configuration of p-block elements is ns2np1-6.... View Article
Why the enthalpies of fusion for all reactions are positive?
The enthalpies of fusion for all reactions are always positive because melting of a solid is an endothermic process in... View Article
Which law of conservation is used in the working of rockets?
The Law of conservation of momentum states that the linear momentum of the system is always conserved for an isolated... View Article
Where do metals get deposited during electrolytic reduction?
During electrolytic reduction, the metals are deposited at the cathode (the negatively charged electrode). Electrolytic reduction is a type of... View Article
The composition of the nuclei of two atomic species X and Y are given as under Protons = 6(X): 6(Y) Neutrons = 6(X): 8(Y). Give the mass numbers of X and Y. What is the relation between the two species?
The composition of the nuclei of two atomic species X and Y are given as under Protons = 6(X): 6(Y)... View Article
What are aromatic compound containing Benzene Ring known as?
The compound containing the Benzene ring is called Benzenoid. Benzenoid compounds The molecules have at least one benzene ring in... View Article
The camera is set in a proper direction by _________
The camera is set in a proper direction by the viewfinder. Viewfinder and its types Viewfinder helps you stabilize the... View Article
Manganese in toxic concentrations leads to the deficiency of
Manganese in toxic concentrations leads to the deficiency of calcium, iron and magnesium as it competes with iron and magnesium... View Article
What could be the reasons for adopting contraceptive methods?
Contraception can be used to prevent pregnancy, and some types will also protect you from sexually transmitted infections (STIs). Contraceptive... View Article
List the reason for the nucleus to exihibhit positive charge.
The positive charge on the nucleus is due to the presence of protons in it. Neutrons have no charge, and... View Article
What is the physical quantity that an electron volt measures?
Electron volt (eV) is used to measure energy or threshold energy or work function, The SI unit of energy is... View Article
Give an example of a metal which is a poor conductor of heat.
Lead is a metal that is a bad conductor of heat. What are conductors and non-conductors? Conduction is the transfer... View Article
In terrestrial areas temperature and rainfall is affected by:
In terrestrial habitats, temperature and rainfall conditions are influenced by transpiration. Transpiration increases the water content in the air, due to which temperature decreases and... View Article
