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Reaction of alcohol, with a carboxylic acid is known as 1 Substitution Reaction 2 Addition reaction 3 Esterification 4 Hydrogenation
1 3621‘Saponification involves the hydrolysis of fats and oils by 1 Water 2 Washing soda 3 Stearic acid 4 Caustic soda
1 8373Which of the following reagents gives a silver mirror test when added to aldehydes? 1 Fehling’s solution 2 Tollen’s Reagent 3 Ebaeyer’s Reagent 4 Nessler’s Reagent
1 3837Which of the following gases is obtained by the reaction of copper with dilute nitric acid is 1 NO2 2 N2O5 3 O2 4 NO
1 3634Which of the following substances undergoes chemical change on heating? 1 Sodium chloride 2 Silica 3 Lead nitrate 4 Platinum wire
2 11729Which of the following reactions is used for increasing the number of carbon atoms in a chain? 1 Substitution reaction 2 Wurtz reaction 3 Friedel – Crafts reaction 4 Cannizzaro’s reaction
2 4523Water is neither acidic nor alkaline because 1 It cannot accept or donate protons 2 It boils at a high temperature 3 It can dissociate into equal number of hydrogen ions 4 It cannot donate or accept electrons
ACIO,
2 12753Superphosphate fertilizer is prepared by the reaction between 1 Calcium phosphate and Sulphuric hydroxide 2 Sodium phosphate and Sodium nitrate 3 Magnesium phosphate and Sodium nitrate 4 Sodium sulphate and Phosphoric acid
2 6945The final products of combustion of ethane are 1 Carbon and oxygen 2 Ethylene and Hydrogen 3 Water and Carbon monoxide 4 Carbon dioxide and water
2 8006Which of the following metals can displace zinc from a solution of zinc sulphate? 1 Lead 2 Magnesium 3 Iron 4 Mercury
2 5804Chemical change does not take place in case of 1 Souring of milk into curd 2 Rusting of iron in atmosphere 3 Burning of magnesium ribbon in air 4 emitting of light by a red hot platinum wire
3 11782Water gas is prepared by passing 1 Steam over white-hot coke 2 Air over red-hot coke 3 Methane over red-hot coke 4 Steam over heated sulphur
6 18757Soda-acid fire extinguisher involves the reaction between 1 Sodium hydroxide and nitric acid 2 Sodium bi carbonate and sulphuric acid 3 Sodium sulphate and carbonic acid 4 Sodium carbonate and hydrochloric acid
5 15815The pink color of Bayer’s reagent is discharged when acetylene is passed through it. This is due to the formation of 1 Acetic acid 2 Ethylene 3 Water 4 Oxalic acid
2 7565
a sample of gas occupies a volume of {450.0 ml}at {740 mm Hg}and[16C]determine the volume of this same sample at [760 mm Hg]and [37c]?
Finally, we want to ask that why you have chosen the field of cardiologist?
What do you enjoy most being an Astronomer?
hi sir plz send me clerical exams model test papers for the preperation of indian bank exam am very thankful to you
how do you get on with your current boss
Dear sir i need central bank of india clerical grade last three year question papers. Kindly forward to my email id gsmaliniraj@yahoo.co.in, malinisankaram@gmail.com
Have you learned any new math tactics or shortcuts with your job?
write a program to find out the divisor of a given integer number. Sample input:50 Sample output:2,5,10,25
what is the extinction coefficient for Indomethacin or at 319nm wave length.
Give the chemical formula of Garnet?
Iam a B.PHARMA GRADUATE from DELHI UNIVERSITY and I am looking forward for DRUG INSPECTOR EXAM..kindly mail me any ques papaers reg the same...
plz.mail me model papers of drug inspector of chhattisgarh..or MP.if Posible. Mail Id-recha_1428@rediffmail.com...mrs_1428@rediffmail.com,
can you email me because I have a report and I need you to answer these questions if you would like to if not I completely under stand.
I am doing my m.sc biotechnology.but i don't know about the interview questions of various company and how i have to face.can you please anyone send that placement papers?thank you
hi friends, dis is ramana reddy.i have been workining in bulk drugs as QC chemist.i would like 2 change d company.i want sample RESUME,OFFER LETTER,APPOINTMENT LETTER,PAY SLIP.if any body has these documents,pls send 2 my mail id i.e ramanareddy.sdpl@ymail.com
