Last seen: Sep 10, 2021
(a) Turmeric. (b) The yellow stain of curry turns reddish-brown when soap is scrubbed on it because of the fact that soap solution is basic in natur...
(a) Copper (II) chloride, CuCl2 (b) CuO(s) + 2HCl(aq) → CuCl2(aq) + H2O(l) (c) Copper oxide is basic in nature
Baking soda solution. Being basic in nature, it neutralises excess acid in the stomach.
Correct answer: (d) 1.12 Å, 1.21 Å, 1.30 Å, 1.49 Å Explanation: The bond length follows the order O2+ < O2 < O2- < O22- According to ...
Correct answer: (a) H2 > Li2 > B2 Explanation: The molecular orbital configuration of the given molecules is H2 = σ(1s)2(no electron anti-...
Correct answer: (a) NO → NO+ Explanation: For NO Total no. of electrons = 15 B.O = 2.5 Mag. Behaviour = Paramagnetic For NO+ Total no. o...
Correct answer: (b) NO2 and O3 Explanation: Both NO2 and O3 have angular shape and hence will have net dipole moment.
Correct answer: (b) NO Explanation: The molecular orbital configuration of the molecules given is Total no. of electrons in NO = 7(N) + 8(O) = 1...
Correct answer: (a) XeF4 Explanation: XeF4 has square planar structure, while NH4+, BF4- and CCl4 have tetrahedral structure.
Correct answer: (b) cis -1, 2 dichlorobenzene Explanation: Cis1, 2 - dichloro benzene will have some D.M. figure.png
When soap is dissolved in water, the solution is alkaline in nature due to the formation of alkali NaOH or KOH. The solution changes the colour of red...
Carbon burns in oxygen to form carbon dioxide gas. The reaction is highly exothermic. That is why different forms of coal are used as fuels. The most ...
Soap may be represented by the formula RCOONa where R is an alkyl group which represents a long chain of carbon with fifteen or more atoms. Now, oil d...
Distinction based on physical properties are as: (a) Smell: Ethanol has a characteristic smell known as alcoholic smell which is pleasant. Ethanoic ...
A homologous series is a series of carbon compounds that have different numbers of carbon atoms but contain the same functional group. It can be repre...
The molecule of chloromethane (CH3Cl) consists of three elements, i.e. carbon (Z = 6), hydrogen (Z = 1) and chlorine (Z = 17). Carbon atom has four va...
(b) the fuel is not burning completely
The purpose of soap or detergent in washing is to reduce friction between the oil drops carrying dirt particles and the water so that they may mix wit...