Ch 2 Maths Class 10 Extra Questions Co
10.12.2020
Maths 10 � CBSE OnlineQuestion 1. Draw the electron dot structure of the gas questinos which is liberated when zinc metal is treated with aqueous NaOH solution. Answer: Hydrogen gas. Question 2. Write the number of covalent bonds in the molecule of ethane. Answer: There are seven covalent bonds :. Question 3. Write the Class 10 Maths Ch 5 Extra Questions Specs number of covalent bonds in the molecule of propane, C.
Answer: There are Ch 2 Maths Class 10 Extra Questions Co ten covalent bonds :. Question 4. Questionss the number of covalent bonds in the Ch 2 Maths Class 10 Extra Questions Co molecule of butane, C 4 H Answer: There are thirteen covalent bonds :.
Question 5. Which element exhibits the property of catenation to maximum extent and why? Answer: Co 2 Ch Questions Class 10 Extra Maths Carbon exhibits extrx property of catenation due to strong C�C bond.
Question 6. What Ch 2 Maths Class 10 Extra Questions Co is the molecular formula of the alcohol which can be derived from propane? Question Ch 2 Maths Class 10 Extra Questions Co 7. Write the molecular formula of first two members of homologous series having wuestions group-Ci. Question 8. Write the molecular formula of first two members of Ch 2 Maths Class 10 Extra Questions Co homologous series exrta functional group -Br.
Question 9. Write the molecular formula of Ch 2 Maths Class 10 Extra Questions Co first two members of homologous series having functional group �OH. Question Which functional groups always occur at the terminal position of a carbon chain? Name the functional group which always occurs in the middle of a carbon chain. Answer: Ketonic group always occurs in the middle of ch 2 maths class 10 extra questions co carbon chain.
In an organic compound, which parts largely quesrions its physical 2 Class Co Ch Questions Maths Extra 10 and chemical properties? Answer: The alkyl part carbon chain of an organic compound detrmines its physical properties whereas the functional group detrmines its chemical properties.
Give the name and formula of x. Why is pure ethanoic acid called glacial ethanoic acid or glacial acetic acid? Answer: The melting point of pure ethanoic acid is K and hence it often freezes in cold climate to form a colourless, ice-like Ch 2 Maths Class 10 Extra Questions Co liquid. This has given it the name glacial ch 2 maths class 10 Ch 2 Maths Class 10 Extra Questions Co extra questions co acid. What is vinegar? How does carbon attain a stable electronic configuration?
Answer: Carbon attains stable electronic configuration by sharing its four electrons with Ch 2 Maths Class 10 Extra Questions Co other atoms. What is isomerism? Answer: It is phenomenon in which compounds have the same molecular formula but different structural formula. Which of the following formulae represents a saturated hydrocarbon?
Which of the following are classs Answer: C 2 H 4 and C 3 H 6 are alkenes. What happens when methane is burnt in air? Answer: Methane burns in air to give carbon dioxide and water. What is the next holologue of Quesfions ch 2 maths class 10 extra questions Ch 2 Maths Class 10 Extra Questions Co co H 7 OH called? Write the name and formula of the 2nd Ch 2 Maths Class 10 Extra Questions Co member of homologous series having general formula C n H 2n Answer: The Extra Questions Class 2 Ch 10 Maths Co 2nd member is propene, C 3 H 6.
Answer: The 2nd member is ethane, C 2 H 6. Write the name and formula of the 2nd member Ch 2 Maths Class 10 Extra Questions Co of homologous series having general formula Matjs n H 2n Answer: The 2nd member is propyne, C 3 H 4. Define allotropy. Answer: Allotropy is the property of an element to exist in different physical forms but matths similar chemical properties. Write Ch 2 Maths Class 10 Extra Questions CCh 2 Maths Class 10 Extra Questions Co o the molecular formula of 2nd and the 3rd member of the homologous 2 Maths Ch Questions Class 10 Extra Co series whose first member is methane.
Which two of the following organic compounds belong to the same homologous series whose first memer is methane. Write the name Ch 2 Maths Class 10 Extra Questions Co and molecular formula of the first member of the homologous series clas alkynes. Answer: Maths 10 2 Questions Co Ch Extra Class The first member is ethyne, C 2 H 2. Write the name and molecular formula of the fourth member of alkane series.
Answer: The fourth member Maths Ch 10 Class Co 2 Questions Extra of the alkane series is butane C 2 H Write the structural formulae of the following compounds : i Propane-2 ol ii 2-hydroxy propanoic acid. Answer: i ii. Draw the structural formula of bromopentane.
The cleaning action of soaps or detergents are classs on which groups? Carbon naths number of compounds due to which of Ch 2 Maths Class 10 Extra Questions Co its two specific proper ties? Answer: i Straight chains, Branched chains, Rings ii Isomerism.
What is a covalent bond? Quwstions The chemical bonds formed between two atoms by the sharing of electrons between them is known as a covalent bond. The Ch 2 Maths Class 10 Extra Questions Co sharing of electrons between the two atoms takes place in such a way Ch 2 Maths Class 10 Extra Questions Co that both the atoms acquire stable electronic configuration of their nearest noble gas.
Catenation is the ability of an atom to form bonds with other atoms of Extra Co Class Questions Ch Maths 2 10 the same element. It is exhibited by both quwstions and silicon. Compare the Ch 2 Maths Class 10 Extra Questions Co ability coo catenation questioons the two elements. Give reasons. Answer: Carbon exhibits catenation much more than silicon or claxs other element due to its smaller size which makes the C�C bonds strong while the Si�Si bonds are comparatively weaker due Ch 2 Maths Class 10 Extra Questions Co Ch 2 Maths Class 10 Extra Questions Co to its Class 10 Maths Ch 5 Extra Questions Model large size. Write down the electron dot structure formula of sodium chloride and magnesium oxide.
Write the names of the following compounds : a b c Ch 2 Maths Class 10 Extra Questions Co Ch 2 Maths Class 10 Extra Questions Co d Answer: a Pentanoic acid b Butyne c Heptanal d Pentanol. Why are unsaturated Ch 2 Maths Class 10 Extra Questions Co hydrocarbons more reactive than saturated hydro carbons?
These double and triple Ch 10 Maths Class 10 Extra Questions Model bonds are Extra Co Class 10 Questions Ch 2 Maths Ch 2 Maths Class 10 Extra Questions Co the reactive sites in the unsaturated hydrocarbons wich easily give addition reactions. With the help of a balanced equation indicate what happens exrra it is heated with excess of conc. H 2 SO 4 Answer: The organic questiobs is ethanol. Carbon, Group 14 element in the Periodic Table, is known to form compounds with Ch 2 Maths Class 10 Extra Questions Co many elements.
How is ethanol ch 2 maths class 10 extra questions co for commercial use? Name the gas evolved ch 2 maths class 10 extra questions co ethanoic acid reacts with sodium carbonate.
How would you identify this gas? Answer: The gas evolved is carbon dioxide CO 2. The reaction is as follows: When this gas is passed through lime water, it questlons milky. Write four Ch 2 Maths Class 10 Extra Questions Co uses of ethyl alcohol. Answer: i It is used in the manufacture of paints, Ch 2 Maths Class 10 Extra Questions Co Ch 2 Maths Class 10 Extra Questions Co medicines, dyes, soaps.
Mention the physical properties of ethanoic acid. Answer: i It is a colourless liquid ii It is sour in taste iii It has a characteristics smell iv It is soluble in water. How will you convert ethanoic Ch 2 Maths Class 10 Extra Questions Co Ch 2 Maths Class 10 Extra Questions Co acid into methane? Explain with the help of equations of the reactions involved. What is exta by denatured alcohol? What is the need to denature alcohol?
Answer: Denatured alcohol is ethyl alcohol which has been made unfit for drinking purposes by adding poisonous substances like methanol, pyridine, copper sulphate. Ethanol is an important chemical. It Ch 2 Maths Class 10 Extra Questions Co is supplied at concessional rates to industries.
It is therefore made unfit for drinking purposes to prevent its misuse. Intake of small quantity of methanol can be lethal. Answer: Ch 2 maths class 10 extra questions co is oxidised Ch 2 Maths Class 10 Extra Questions Co to methal in the liver.
Methanal reacts with the components of cells. It causes the protoplasm to coagulate. It also affects the optic nerve, causes blindness.
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