number system संख्या पद्धति | surds and indices 5sec trick | maths tricks #shorts #mathstricks #math

Questions Of Number System (संख्या पद्धति पर आधारित प्रश्न)|OMR

Description OF Periods (all seven periods) || Maximum Number OF Elements in Given Period (short trick to remember) || Class Illustration with Short Tricks

Number System(संख्या पद्धति)|Questions Of Number System (संख्या पद्धति पर आधारित प्रश्न)|OMR

Taxonomic classification system mnemonics | animal kingdom Classification short tricks | NEET 2020 | 12th Boards

Important Time Saving Short Trick / Shortcut For JEE Main 2019 Maths

Solve Any Calculus Problem in Just 20 Seconds | Maths Short Tricks For JEE Mains 2020

Molecular Mass || Gram Molecular Mass || Number of Moles || Number of Molecular Atomicity || Class Illustration with Short Tricks

The pie-chart shows percentage-wise distribution of teachers who teach six different subjects. Study the pie chart and answer the questions पाई-चार्ट छह अलग-अलग विषयों को पढ़ाने वाले शिक्षकों के प्रतिशत को दर्शाता है। पाई चार्ट का अध्ययन करें और प्रश्नों के उत्तर दें। Total number of teachers = 1650 शिक्षकों की कुल संख्या - 1650 What is the total number of teachers teaching English, Maths and Physics? अंग्रेजी, गणित और भौतिकी पढ़ाने वाले शिक्षकों की कुल संख्या क्या है?

Comprehension # 3 Branched - chain alkanes are named according to the following rules. (1) Longest chain Rule - Locate the longest continuous chain of carbon atoms. This chain determines the parent name of the alkane. (2) Lowest set of locants -The longest continuous chain are numbered by arabic numerals 1,2,3,4....from one end of chain to the other, in such a manner that carbon atom carrying first substituent gets the lowest number. (3) Name of the branched chain alkane - The substituent name and the parent alkane are joined in one word and there is a hyphen between the number and the substituent name. (4) Alphabetical order of the side chains- When two or more substituent group should be listed alphabetically. (5) Numbering of different alkyl groups at equivalent positions - If two different alkyl groups are present at equivalent positions the numbering of the parent chain is done in such a way that alkyl group which comes first in the alphabetical order gets the lower number. (6) Naming of same alkyl groups at different positions - When two or more substituents are identical, indicate this by the use of prefixes di, tri, tetra and soon. Commas are used to separate number from each other. (7) Rule of larger number of subsitiuents - If a compound has two or more chains of the same length, the parent hydrocarbon is the chain with the greater number of substituents. (8) Numbering the complex substituent - Name such as iso-propyl, sec-butyl and tert-butyl are acceptable substituent name is the IUPAC system of nomenclature but systematic name are preferable. Systematic substituent names are obtained by numbering the substituent starting at the carbon that is attached to the parent hydrocarbon. This means that the carbon that is attached to the parent hydrocarbon is always the number-1 carbon of the substituent. In following compound CH_(3)-CH_(2)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-underset(CH_(3))underset(|)(CH)-overset(CH_(3))overset(|)(CH)-CH_(2)-CH_(3) The correct lowest set of locant is :-

Comprehension # 3 Branched - chain alkanes are named according to the following rules. (1) Longest chain Rule - Locate the longest continuous chain of carbon atoms. This chain determines the parent name of the alkane. (2) Lowest set of locants -The longest continuous chain are numbered by arabic numerals 1,2,3,4....from one end of chain to the other, in such a manner that carbon atom carrying first substituent gets the lowest number. (3) Name of the branched chain alkane - The substituent name and the parent alkane are joined in one word and there is a hyphen between the number and the substituent name. (4) Alphabetical order of the side chains- When two or more substituent group should be listed alphabetically. (5) Numbering of different alkyl groups at equivalent positions - If two different alkyl groups are present at equivalent positions the numbering of the parent chain is done in such a way that alkyl group which comes first in the alphabetical order gets the lower number. (6) Naming of same alkyl groups at different positions - When two or more substituents are identical, indicate this by the use of prefixes di, tri, tetra and soon. Commas are used to separate number from each other. (7) Rule of larger number of subsitiuents - If a compound has two or more chains of the same length, the parent hydrocarbon is the chain with the greater number of substituents. (8) Numbering the complex substituent - Name such as iso-propyl, sec-butyl and tert-butyl are acceptable substituent name is the IUPAC system of nomenclature but systematic name are preferable. Systematic substituent names are obtained by numbering the substituent starting at the carbon that is attached to the parent hydrocarbon. This means that the carbon that is attached to the parent hydrocarbon is always the number-1 carbon of the substituent. In following compound CH_(3)-CH_(2)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-underset(CH_(3))underset(|)(CH)-overset(CH_(3))overset(|)(CH)-CH_(2)-CH_(3) The molecular weight of following compound is 3,7-Diethyl-2,2-dimethyl-4-propylnonane :-