Evaporation is_____________?

A. Endothermic Reaction B. Surface Process C. Continuous Process D. All of these.

242

2-Butyne contains:______________?

A. sp hybridised carbon atoms only B. sp 3 hybridised carbon atoms only C. both sp and sp 2 hybridised carbon atoms D. both sp and sp 3 hybridised carbon atoms

243

The acetylene molecule contains:___________?

A. 5 sigma bonds B. 4 sigma and 1 pi bonds C. 3 sigma and 2 pi bonds D. 2 sigma and 3 pi bonds

244

Identify the unsaturated compound that does not give red ppts when treated with____________Ammonical cuprous chloride

A. CH 3 -CH 2 -CCH (1-Butyne) B. CH 3 -CCH(1-Propyne) C. CH 3 -CH 2 -CH 2 CCH(1-Pentyne) D. CH 2 =CH 2

245

In the presence of Zn, Hydrolysis of ozonide of 1-butene gives:_____________?

A. Ethylene only B. Acetaldehyde and Formaldehyde C. Propionaldehyde and Formaldehyde D. Acetaldehyde only

246

An organic compound has a triple bond and not double bond. It can be tested by __________?

A. Bromine water B. Bayer's reagent C. Fehling solution D. Ammonical silver nitrate

247

Which of the following has acidic hydrogen?

A. Ethyne B. Ethene C. Ethane D. Benzene

248

Ozonolysis of acetylene gives:

A. Glycol B. Glyoxal then formic acid C. Formaldehyde D. None

249

Product formed when 2-pentyne reacts with ozone in the absence of Zinc is __________?

A. CH 3 CH 2 CHO + CH 3 CHO B. CH 3 CH 2 CHO + CH 3 COOH C. CH 3 CH 2 COOH + CH 3 COOH D. CH 3 COOH + CO 2

250

O3 reacts with C2H4 to form ozonide, while on further hydrolysis it forms _________?

A. Ethylene oxide B. HCHO C. Ethylene glycol D. Ethyl alcohol

251

Position of double bond in an organic compound is determined by ___________?

A. Ozonolysis B. Oxidation C. Reduction D. Hydrogenation

252

At higher temperature, Ethyne on reaction with water in the presence of HgSO4 and H2SO4 gives:

A. Acetone B. Acetaldehyde C. Acetic acid D. Ethyl alcohol

253

Diameter of an atom is in the order of________________?

A. 0.2m B. 0.2mm C. 0.2nm D. 0.2pm

254

What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called?

A. Paint B. Glass C. Gun Powder D. Cement

255

Covalent network crystals have_____________?

A. higher melting point then molecular crystals B. lower melting point then molecular crystals C. discrete molecules linked by Van der waals forces D. hydrogen bonding

256

All of the following substances are crystalline except_____________?

A. Ice B. Diamond C. Sucrose D. Plastic

257

Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?

A. ionic substances B. metallic substances C. molecular solids D. covalent network solids

258

Which of the following is a substance?

A. Sea water B. Brass C. Tape water D. Graphite

259

Sodium carbonate is produced by____________?

A. haber process B. Amonia solvay process C. decons process D. lead chamber process

260

The radioactive isotope of hydrogen is called___________?

A. tritium B. deuterium C. protium D. ortho-hydrogen

Basic World Statistics