Most soluble in water is (A) camphor (B) sulfur (C) common salt (D) sugar
Sugar is most soluble in water because, it has six hydroxyl groups. They usually dissolve faster and better in warm... View Article
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How to convert chlorobenzene to p-nitro phenol?
First the chlorine from Chlorobenzene is substituted by reacting with sodium hydroxide with an alcohol group. In this step phenol... View Article
(a) Name a lustrous non-metal. (b) Name a non-metal which exists as a liquid at room temperature. (c) The allotropic form of a non-metal is a good conductor of electricity. Name the allotrope. (d) Name a non-metal which is known to form the largest number of compounds. (e) Name a non-metal other than carbon that shows allotropy. (f) Name a non-metal which is required for combustion.
Iodine is a lustrous non-metal. Bromine is a non-metal which exists as a liquid at room temperature. Graphite is the... View Article
Name the first fully synthetic fibre also name it ingredient
Nylon is the first fully synthetic fibre. Synthetic fabrics and textiles made from man-made rather than natural fibres .Nylon is... View Article
What is amphoteric nature?
An amphoteric compound is a molecule or ion that can react both as an acid and as a base. Since... View Article
How aliphatic aldehydes differ from aromatic aldehyde?
Aromatic aldehydes are organic molecules having the –CHO functional group attached to an aromatic group. Aliphatic aldehydes are organic compounds... View Article
The Cannizzaro’s reaction is not given by (1) formaldehyde (2) Acetaldehyde (3) benzaldehyde
Benzaldehyde has no α-hydrogens, so it will undergo the Cannizzaro reaction . Acetaldehyde , CH 3 CHO has α-hydrogen atoms.... View Article
How to convert benzene diazonium chloride to phenol?
The diazonium salt or diazonium chloride, on heating in the aqueous acidic medium, it liberates nitrogen and forms phenol as... View Article
Name the vitamin that gets destroyed by heat during cooking
Boiling reduces vitamin C content more than any other cooking method. Broccoli, spinach, and lettuce may lose up to 50%... View Article
Name the chemical reaction. Fe + CuSO4(aq) → FeSO4(aq) + Cu(s)
Fe + CuSO4(aq) → FeSO4(aq) + Cu(s) The type of reaction is a displacement reaction. In this reaction, the highly... View Article
Can you store lemon pickle in an aluminium vessel?
Answer: The lemon pickle contains acids. Metals like aluminum readily react with acid to liberate hydrogen gas. This can lead... View Article
Why is B2 paramagnetic while C2 is diamagnetic?
The molecular orbital electronic configuration of both B2 and C2 are: B2: [σ1s]2[σ*1s]2[σ2s]2[σ*2s]2[π2px]1[π2py]1 C2: [σ1s]2[σ*1s]2[σ2s]2[σ*2s]2[π2px]2[π2py]2 B2 has two unpaired electrons,... View Article
How to calculate the equivalent weight of potassium carbonate?
Equivalent weight is calculated by dividing the molecular weight by n factor. Equivalent weight = Molecular weight/n n= total positive... View Article
Which oxide of nitrogen is called mixed acid anhydride?
Nitrogen dioxide a mixture of anhydride means the compound forms a mixture of two acidic anhydrides. It is because when... View Article
06 Apr 2021: UPSC Exam Comprehensive News Analysis
CNA 6th April 2021:- Download PDF Here TABLE OF CONTENTS A. GS 1 Related B. GS 2 Related INTERNATIONAL RELATIONS... View Article
Which gas is filled in an aeroplane tyre?
Nitrogen gas is present in aeroplanes and racing tyres . It is an inert gas so high pressures and temperatures... View Article
The molarity of pure water is (1) 18.36 M (2) 1.16 M (3) 55.56 M (4) 5.56 M
Molarity is defined as the number of moles of the solute per litre of solution. Molarity = No of moles... View Article
Which of the following is not an extensive property? (a) molarity (b) heat capacity (c) mass
The correct answer is (a) Molarity Extensive property An extensive property is a property that depends on the amount of matter... View Article
Write down all possible functional isomers of C4H8O.
Isomerism is the phenomenon in which more than one compounds have the same chemical formula but different chemical structures. Chemical... View Article
Which one of the following does not undergo sublimation? A) iodine. B) sodium chloride. C) ammonium chloride. D) None of these.
Answer: B) sodium chloride Sublimation is the process of a substance changing directly from the solid to the gas phase without... View Article
