The 3d transition series starts from which atomic number?
Answer: The 3d transition series starts from scandium whose atomic number is 21 after calcium whose atomic number is 20.... View Article
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What is the definiton of one Joule in terms of work done?
Answer: 1 joule is defined as the work done in displacing a body through 1 m under the influence of... View Article
In which direction does the phloem transfer its contents?
Answer: The phloem transfers food from the stem to the roots when the plant can produce food and send it... View Article
Which alkali metal does not exhibit photoelectric effect_______
Answer: Which alkali metal does not exhibit photoelectric effect lithium(Li). The alkali metals emit electrons when radiation strikes on their... View Article
What are the differences between amphibians and reptiles?
Answer: The difference between amphibians and reptiles are tabulated below. Amphibian Reptiles They have a dual mode of life in terrestrial... View Article
Why does the weather become very cold after a hail storm?
Answer: Ice absorbs a large amount of Latent heat from the surroundings to melt. There is a lot of heat... View Article
Where one can use the phenomenon of Photoelectric effect?
Answer: Photoelectric effect The photoelectric effect is a phenomenon in which electrons are ejected from the surface of a metal... View Article
What is the relation between one KiloWatt hour and Joule?
Answer: kWh is a commercial unit. 1kWh = 1kW x 1h 1kWh = 1000 W x 3600 s 1 kWh... View Article
What is the difference between TIR and normal reflection?
Answer: The difference between TIR and normal reflection are tabulated below. Total Internal Reflection (TIR) Reflection of light It only... View Article
How do we detect the smell of an agarbatti (incense stick)?
We all can smell the incense stick whenever it is lit. Have you ever imagined how does the smell reaches... View Article
On reacting NaHCO3 and acetic acid, the gas evolved turns_____
Answer: On reacting NaHCO3 and acetic acid, the gas evolved turns lime water milky. On reacting NaHCO3 and acetic acid, carbon... View Article
Write the IUPAC name of the compound CH3CH=CH-CH2Br.
Answer: A single chemical compound can have several acceptable systematic names and the systematic method of naming organic chemical compounds... View Article
The oxidation number of Pt in the complex [Pt(C2H4)Cl3]– is___________
Answer: + 2 Given complex [Pt(C2H4)Cl3]– Let us consider the oxidation state of Pt be X Since the complex’s total... View Article
Name the process of conversion of K2Cr2O7 into Cr2(SO4)3
Answer: Given equation K2Cr2O7 → Cr2 (SO4)3 It is an example of reduction process. Let us find the oxidation state of Cr... View Article
What is the work done by an electrochemical cell equal to?
Answer: Work done by an electrochemical cell is equal to the decrease in Gibbs energy ΔGo = -nFEocell Electrochemical cell... View Article
Which layer of the atmosphere helps in radio transmission?
Answer: Ionosphere of the atmosphere helps in radio transmission. Various layers in the atmosphere Our atmosphere is composed of many... View Article
Which is not a tool of tracing evolutionary relationships?
Answer: Evolutionary relationships can be easily traced with the help of tools like time dating, excavating and information about DNA... View Article
What is the reactivity order of halogen acids with ethers?
Answer: The cleavage of ethers by halogen acids involves the nucleophilic attack of the halide ion on the protonated ether... View Article
How do gymnosperms and angiosperms differ from each other?
Angiosperms are flowering plants that have their seeds enclosed within the fruits. Gymnosperms, on the other hand, do not bear... View Article
Why do amines have higher boiling point than hydrocarbons?
Answer: Amines are having higher boiling points than hydrocarbons, as C-N bond in amines is more polar than a C-C... View Article
