ECAT Chemistry Online Test With Answers

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ECAT Chemistry Online Test

Sr. # Questions Answers Choice
1 Phenol was discovered by: Hofmann Runge Henderson Bakelite
2 Alcohol can be denaturated by adding: Acetone Methanol Pyridine All
3 Concentration of rectified spirit is: 12% 14% 90% 95%
4 Absolute alcohol is obtained by adding rectified apirit in alcohol: Water Na<sub>2</sub>CO<sub>3</sub> NaOH CaO
5 denaturing of alcohol is done by adding methanol in ethanol: 10% 20% 30% 40%
6 Which is possible in ethers? Reactivity high Oxidation and reduction Reactivity towards bases Towards acids
7 General formula of alcohol is: ROH Ar-OH R-O-R Ph-OH
8 Alcohols are named by replacing 'e' of alkane with: al ene ol one
9 Ethanol is prepared in Pakistan form fermentation of: Starch Sugar Glucose Molasses
10 Use of ethanol as: Drink Solvent and fuel In beverage All of these
11 Ethyl alcohol prepared during fermentation is pure: 20% 10% 11% 12%
12 Alcohals can be distinguished using test: Lucas Tollen's Koib's William's
13 Oxidation of ter-alcohol gives: Aldehyde Formaldehyde Ketone Alkens
14 Taste of lower alcohols is: Sweet Bitter Our Salty
15 Methanol is prepared from CO and H2 using catalyst: ZnO Cr<sub>2</sub>O<sub>3</sub> Pt Ni
16 Which is not property in ether: Very weak hydogen bonding High b.p Slightly soluble Inflammable
17 Derivative of water is: Alcohals Phenols Either Phenol
18 Alcohols are derivatives of: Benzene Alkanes Alkens Alkynes
19 Phenols are derivative of: Alkanes Alkenes Alkynes Benzene
20 According to Lewis concept ethers behave as: Acid Base Acid as well as a base None of them
21 Rectified spirit contains alcohol about: 80% 85% 90% 95%
22 Methyl alcohol is not used: As a subsitution for petrol As an anti-freezing agent For denating of ethyle alcohal As a solvent
23 Which compound is called a universal solvent? H<sub>2</sub>O CH<sub>3</sub>OH C<sub>2</sub>H<sub>5</sub>OH CH<sub>3</sub>----O---CH<sub>3</sub>
24 which enzyme is not involved in the fermentation of starch ? Diastase Zymase Urease Invertase
25 Ethanol can be converted into ethanoic acid : Hydrogenation Hydration Oxidation Fermentation
26 Which compound has the maximum repulsion with water? C<sub>6</sub>H<sub>6</sub> C<sub>2</sub>H<sub>5</sub>OH CH<sub>3</sub>CH<sub>2</sub>CH<sub>2</sub>OH CH<sub>3</sub>----O---CH<sub>3</sub>
27 Which compound is more soluble in water? C<sub>2</sub>H<sub>5</sub>OH C<sub>5</sub>H<sub>5</sub>OH CH<sub>3</sub>OCH<sub>3</sub> n-Hexanol
28 Which bond shows maximum hydrogen bonding with water? CH<sub>3</sub>OH C<sub>2</sub>H<sub>5</sub>OH CH<sub>3</sub>----O----CH<sub>3</sub> C<sub>6</sub>H<sub>5</sub>OH
29 Which compound shows more hydrogen bonding? C<sub>2</sub>H<sub>6</sub> C<sub>2</sub>H<sub>5</sub>Cl CH<sub>3</sub>----O----CH<sub>3</sub> C<sub>2</sub>H<sub>5</sub>OH
30 Which is a good nucleophile? F<sup>-1</sup> Cl<sup>-1</sup> Be<sup>-1</sup> I<sup>-1</sup>
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