Preparation methods 1. From calcium carbide: Ethyne is prepared by calcium carbide with water. CaC₂ + 2H₂O → Ca (OH)₂ + C₂H₂ 2. From vicinal dihalides: Vicinal dihalides on treatment with alcoholic potassium hydroxide undergo, dehydrohalogenation one molecule of hydrogen is eliminated to form alkenyl halide which on treatment with sodalime gives alkyne. Some Other General Methods Read more about Methods of Preparation of Acetylene[…]
The Kerala Government on December 20,2016 decided not to conduct separate entrance examinations by the state for medical and other professional courses except engineering from next academic year. The students would instead be admitted to medical, agricultural, AYUSH, veterinary sciences from the rank list published by National Eligibility cum Entrance Test (NEET), conducted by CBSE. Read more about NEET: NO SEPARATE ENTRANCE FOR MEDICAL COURSE EXCEPT ENGINEERING IN KERALA[…]
Precision: All measurements, even when carried out with the utmost precision and care, involve errors. These errors may be associated with technical difficulties (the imperfection of the measuring instruments, the limited possibilities of the human eye, which in many cases takes readings of instruments etc.) and with numerous factors that are difficult or impossible to Read more about Precision, Accuracy & Errors in Measurement[…]
Q1: Imagine you’re in a room that is filling with water. There are no windows or doors. How do you get out? Answer: Stop imagining. Q2: The more you take, the more you leave behind. What are they? Answer: Footprints. Q3: What two keys can’t open any door? Answer: A monkey and a donkey. Q4: Jimmy’s mother had four children. She named Read more about Riddle 2 (With Answers)[…]
Puzzle 1: Which number replaces the question mark?Answer: 6 Puzzle 2: Which number replaces the question mark?Answer: 20 Puzzle 3: Which number replaces the question mark? If 1 =3 2 = 6 3 = 9 4 = 12 Then, 5 = ? Answer: 15 Puzzle 4: Which number replaces the question mark? 11 x 11 = 4 22 x 22 = 16 33 Read more about Math Puzzles 2 (With Answers)[…]
Let l, m, n be direction cosines of a line and a, b, c be three numbers such that . Then we say that the direction ratios of the line are proportional to a, b, c. If ⅔, – ⅔, ⅓ are direction cosines of a line, then its direction ratios are proportional to 2, Read more about Direction ratios[…]
Puzzle 1: Which number replaces the question mark?Puzzle 2: Which number replaces the question mark?Puzzle 3: Which number replaces the question mark? If 1 =3 2 = 6 3 = 9 4 = 12 Then, 5 = ? Puzzle 4: Which number replaces the question mark? 11 x 11 = 4 22 x 22 = 16 33 x 33 = Read more about Math Puzzles 2[…]
Isomerism Isomerism is a phenomenon shown by two or more organic compounds having the same molecular formula but different properties due to difference in arrangement of atoms along the carbon skeleton (structural isomerism) or in space (Stereo isomerism) Structural isomerism 1. Chain isomerism: These isomers arise because of the possibility of branching in carbon chains. Read more about Isomerism[…]
What is ICAR? The Indian Council of Agricultural Research (ICAR) is an autonomous organization under the Department of Agricultural Research and Education (DARE), Ministry of Agriculture and Farmers Welfare, Government of India. Formerly known as Imperial Council of Agricultural Research, it was established on 16 July 1929 as a registered society under the Societies Registration Read more about ICAR Dates Released[…]
Q1: Imagine you’re in a room that is filling with water. There are no windows or doors. How do you get out? Answer: Stop imagining. Q2: The more you take, the more you leave behind. What are they? Answer: Footprints. Q3: What two keys can’t open any door? Answer: A monkey and a donkey. Q4: Jimmy’s mother had four children. She named Read more about Riddle 2[…]