ECAT Chemistry MCQ's Test For Full Book With Answers

ECAT Chemistry MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Which is possible in ethers? Reactivity high Oxidation and reduction Reactivity towards bases Towards acids
2 General formula of alcohol is: ROH Ar-OH R-O-R Ph-OH
3 Alcohols are named by replacing 'e' of alkane with: al ene ol one
4 Ethanol is prepared in Pakistan form fermentation of: Starch Sugar Glucose Molasses
5 Use of ethanol as: Drink Solvent and fuel In beverage All of these
6 Ethyl alcohol prepared during fermentation is pure: 20% 10% 11% 12%
7 Alcohals can be distinguished using test: Lucas Tollen's Koib's William's
8 Oxidation of ter-alcohol gives: Aldehyde Formaldehyde Ketone Alkens
9 Taste of lower alcohols is: Sweet Bitter Our Salty
10 Methanol is prepared from CO and H2 using catalyst: ZnO Cr<sub>2</sub>O<sub>3</sub> Pt Ni
11 Which is not property in ether: Very weak hydogen bonding High b.p Slightly soluble Inflammable
12 Derivative of water is: Alcohals Phenols Either Phenol
13 Alcohols are derivatives of: Benzene Alkanes Alkens Alkynes
14 Phenols are derivative of: Alkanes Alkenes Alkynes Benzene
15 According to Lewis concept ethers behave as: Acid Base Acid as well as a base None of them
16 Rectified spirit contains alcohol about: 80% 85% 90% 95%
17 Methyl alcohol is not used: As a subsitution for petrol As an anti-freezing agent For denating of ethyle alcohal As a solvent
18 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>
19 which enzyme is not involved in the fermentation of starch ? Diastase Zymase Urease Invertase
20 Ethanol can be converted into ethanoic acid : Hydrogenation Hydration Oxidation Fermentation
21 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>
22 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
23 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
24 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
25 Which is a good nucleophile? F<sup>-1</sup> Cl<sup>-1</sup> Be<sup>-1</sup> I<sup>-1</sup>
26 Hydrolysis of Grignard's reagent gives: Alcohol Halide Alkyl Alkane
27 Organic compounds containing halogen atom are called: R---OH R----X R----NH<sub>2</sub> R----COH
28 The order of reactivity for a given halogen in Grignard's reagent is: CH<sub>3</sub>X &gt; C<sub>2</sub>H<sub>5</sub>X &gt; C<sub>3</sub>H<sub>4</sub>X &gt; C<sub>4</sub>H<sub>4</sub>X C<sub>2</sub>H<sub>5</sub>X &gt; C<sub>3</sub>H<sub>7</sub>X &gt; C<sub>4</sub>H<sub>5</sub>X &gt; CH<sub>4</sub>X C<sub>3</sub>H<sub>7</sub>X &gt; C<sub>4</sub>H<sub>7</sub>X &gt; CH<sub>3</sub>X &gt; C<sub>2</sub>H<sub>5</sub>X C<sub>4</sub>H<sub>4</sub>X &gt; C<sub>3</sub>H<sub>7</sub>X &gt; C<sub>2</sub>H<sub>5</sub>X &gt; CH<sub>4</sub>X
29 Characterstics of aromaic are: how hydrogen carbon ratio than alkanes characterstics oudour a &amp;B Characterstics properties
30 Aroma meas: Fragrant Invisible latest affinityt benzene
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