- Which one of the following is also known as the lactic acid?
a) 3-Hydroxy propanoic acid
b) 2-Hydroxy propanoic acid
c) 2-hydroxy butanoic acid
d) 3-hydroxy butanoic acid - Dehydration of alcohol is an example of?
a) addition reaction
b) elimination reaction
c) substitution reaction
d) redox reaction - Water gas heated at 450°C and 200 atm pressure in the presence of ZnO+Cr2O3 will produce?
a) Methanol
b) Methanal
c) Carbonic acid
d) Methane - The rectified spirit contains?
a) 12% alcohol
b) 90% alcohol
c) 95% alcohol
d) 100% alcohol - When acetamide is treated with HNO2, the gas is evolved which of the following?
a) H2
b) O2
c) N2
d) CH4 - By refluxing unsubstituted amide with acid, it will yield which of the following product(s)?
a) ammonia
b) carboxylic acid
c) nitrogen gas
d) both a b - Ethyl amine on acetylation gives which of the following? (PPSC 2020)?
a) acetamide
b) N ethyl Acetamide
c) Methyl acetamide
d) N,N-dimethyl acetamide - Benzamide on reaction with POCl3 gives which of the following??
a) Aniline
b) Chlorobenzene
c) Benzyl amine
d) Benzonitrile - The alcohol which does not react with Lucas reagent is (PPSC 2020)?
a) sec butyl alcohol
b) n-butanol
c) tert-butyl alcohol
d) Iso butyl alcohol - Which of the following is formed when glycerol is heated with oxalic acid at 503K??
a) Glyceric acid
b) Acrolein
c) Allyl alcohol
d) Methanoic acid - An ether is more volatile than an alcohol having the same molecular formula. What is the reason for this difference??
a) dipolar character of ethers
b) alcohols having resonance structures
c) inter-molecular hydrogen bonding in ethers
d) inter-molecular hydrogen bonding in alcohols - Ethers may be used as solvents because they react only with which of the following reactants?
a) Acids
b) Bases
c) Oxidising agent
d) none of these - What are the products when ethyl isopropyl ether is cleaved with concentrated HI?
a) ethanol and 2-iodo-2-methylpropane
b) ethanol and 2-methylpropane
c) iodoethane and isopropyl alcohol
d) none of these - Which of the following has the most acidic hydrogen?
a) hexane-2,4-dione
b) hexane-2,3-dione
c) hexane-2,5-dione
d) hexane-3-one - A new C-C bond formation is possible in (PPSC 2015)?
a) cannizzaro reaction
b) friedel crafts reaction
c) clemmensen reduction
d) none of these - A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives?
a) benzyl alcohol + sodium formate
b) sodium benzoate + methanol
c) benzyl alcohol + methanol
d) sodium benzoate + sodium formate - The formation of cyanohydrin from a ketone is an example of?
a) electrophilic addition
b) nucleophilic addition
c) nucleophilic substitution
d) none of these - The reaction of ethyl formate with an excess of CH3MgI followed by hydrolysis gives?
a) ethanol
b) n-propyl alcohol
c) propanal
d) isopropyl alcohol - Benzoic acid reacts with conc.HNO3 and conc.H2SO4 to give (PPSC 2020)?
a) o,p-nitrobenzoic acid
b) p-nitrobenzoic acid
c) m-nitrobenzoic acid
d) none of these - Formic acid and acetic acid are distinguished by reaction with?
a) sodium ethoxide
b) HgCl2
c) sodium
d) 2,4-dinitrophenylhydrazine
21- Pyrometer is used for measuring__________?
a) High Air Pressure
b) Low Air Pressure
c) High Temperature
d) Low Temperature
22- Luminous intensity has SI unite candela, with symbol __?
a) cdl
b) cad
c) cd
d) cdla
23- 1 zetta is equal to __?
a) 10^21
b) 10^24
c) 10^18
d) None of these
24- In SI special Derived unite ( Henry) is the unit of __?
a) Electric conductance
b) Electric inductance
c) Electric capacitance
d) Electric resistance
25- Leon Battista Alberti invented Anemometer in _?
a) 1550AD
b) 1650AD
c) 1350AD
d) 1450AD
