Why Does Alluvial Soil differ in texture?
Answer: The alluvial soils vary in texture from clay to sandy loam. Alluvial soils are poor in phosphorus but rich... View Article
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Give brief information about farmers of India.
Answer: India is an agriculturally important country. Agriculture is one of the oldest economic activities in India. Majority of employment... View Article
What are the measures taken by India to reduce poverty?
Answer: There are many measures that have been taken by India to reduce poverty. They have used a multi-pronged approach... View Article
What was the procedure adopted for making the Indian Constitution?
Answer: The Indian Constitution was created by the Constituent Assembly which had the capability to convince all the sections of... View Article
Give reasons why we should accept the Constitution made more than seventy years ago.
Answer: The Constitution was framed by the Constituent Assembly of India. The Constituent Assembly worked in a systematic manner. It... View Article
Why is solubility of haloalkanes in water is very how although they are polar in nature.
These polar molecules are known as halo alkanes. Water is a polar molecule as well. Halo alkanes should dissolve in... View Article
Critical temperature for carbon dioxide and methane are 31.1oC and −81.9oC respectively. Which of these has stronger intermolecular forces and why?
The critical temperature of a material is the greatest temperature at which that element or compound exists in liquid form.... View Article
What is the number of octahedral voids per constituent particle in fcc?
In a cubic close packed structure, there are four octahedral voids in total. Aside from the body centre, each of... View Article
Which one of the following does not exist? (A) XeOF4 (B) NeF2 (C) XeF2 (D) XeF6
Xenon forms various compounds with fluorine and oxygen in nature. Some of them can be stated with the reactions are:... View Article
Which of the following changes take place during roasting? (i) Impurities are removed as their volatile oxides. (ii) Ore is converted into its oxide. (iii) Changes like oxidation, chlorination, etc. take place.
Answer: (i),(ii) and (iii) Explanation Roasting causes chemical changes such as oxidation, chlorination, and so on. Impurities are eliminated by... View Article
In an adiabatic expansion of a gas, its temperature : (A) Always increase (B) Always diminishes (C) Remains constant (D) None of these
For the adiabatic process of gas, the heat is kept zero. In the adiabatic expansion of the gas, the work... View Article
Jahn-teller effect is not observed is high spin complexes of: A. d4 B. d9 C. d7 D. d8
The john teller distortion, also known as the jahn-teller effect, is a nonlinear geometrical distortion of a molecule that lowers... View Article
What is the contribution of particle at the edge centre of a particular unit cell is?
The smallest repeating unit of a crystal lattice, or the building block of the crystal, is called a unit cell.... View Article
Which of the following intermediates have the complete octet around the carbon atom ?A) Carbonium ion B) Carbanion C) Free radical D) Carbene
Answer: (B) Explanation In a carbanion, carbon is trivalently bound to three atoms or groups and contains eight electrons (octet).... View Article
In which of the following will the Kharasch effect operate? (A) CH3−CH2−CH−CH2+HCl (B) CH3−CH2−CH=CH2+HBr (C) CH3−CH=CH−CH3+HBr (D) CH3−CH2−CH=CH2+HI
When unsymmetrical alkenes react with alkyl halides (particularly HBr) in the presence of peroxides (mainly benzenes) and the reaction proceeds... View Article
What happens when calcium reacts with water?
When calcium metal reacts with water, it reacts less violently. It produces a hydroxide known as calcium hydroxide (a cloudy... View Article
The adsorption of hydrogen on charcoal is which type of absorption?
Answer: Occlusion Explanation Adsorption is the process of one substance forming a film or coating on the surface of another.... View Article
What is the ph of a 0.00001 molar hcl solution?
The concentration of the solution is previously known to be 0.00001 molar (10-5M). It is now assumed that the solution... View Article
Alkali metal acts as strong reducing agents explain
The periodic table’s group 1 includes alkali metals. Reducing agents are chemicals or elements that may reduce others while also... View Article
A hot liquid contained in a container of negligible heat capacity loses temperature at rate 3K/min just before it begins to solidify. The temperature remains constant for 30 min. If the ratio of specific heat capacity of liquid to specific latent heat of fusion is x/90K−1. Find x. (given that the rate of losing heat is constant).
The heat gain or heat loss for a change of temperature of ΔT of the substance is given as Q=mcΔT.... View Article
