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chemistry > ALCOHOLS , PHENOLS , ETHERS > Flashcards

ALCOHOLS , PHENOLS , ETHERS Flashcards

1
Q

SODIUM DISSOLVES EASLIY IN ALCOHOLS WHY

A

ALCOHOLS ARE AMPHOTERIC

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2
Q

MOST ACIDIC AMONG THE FOUR COMPOUND
1]PHENOL
2]O-NITROPHEONAL
3]M-NITROPHEONAL
4]P-NITROPHEONAL

A

3] M NITROPHENOL

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3
Q

RXN FOR FORMATION OF SALICYLALDEHYDE FROM PHENOL IS

A

RIENER-TIEMANN RXN

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4
Q

MOST EFFECTIVE REAGENT WHICH CONVERTS PROPANOL TO PRPANONE [MEANS FROM ALCHOL TO KETONE]

A

CU/300*C

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5
Q

CARBOLIC ACID IS

A

PHENOL

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6
Q

WHICH COMPOUND IS KNOWN AS OIL OF WINTER GREEN

A

METHLY SALICYLATE

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7
Q

RXN OF LUCAS REAGENT FASTEST WITH

A

TERTIARY ALCOHOLS
[CH3]3 C OH

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8
Q

ALCOHOLS REACT WITH SODIUM TO FORM

A

R–ONA

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9
Q

WHICH COMPUND IS ASPIRIN

A

ACETYL SALICYLIC ACID

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10
Q

WHICH COMPOUND REACT WITH PHTHALIC ACID TO GIVE ACID BASE INDICATORS

A

PHENOL

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11
Q

BAKELITE IS FORMED WHEN PHENOL IS CONDESED WITH

A

HCHO

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12
Q

USED AS AN ANAESTHTIC

A

[C2H5]2O DIETHYL ETHER

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13
Q

LUCAS REAGENT IS

A

CONC.HCLAND ANHYDROUS ZNCL2

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14
Q

ETHERS AND ALCHOLS CAN DISTINGUISHED BY

A

RXN WITH NA

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15
Q

WHICH IS USED TO POISONING ALCOHOL

A

METHLY ALCOHOL

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16
Q

GIVES LIBERMANN NITROSO TEST

A

C6H5OH

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17
Q

LIBERMAAN TEST

A

TO DETECT PHENOL PRESENNCE

CONC SULPHURIC ACIDS AND SODIUM NITITRE IN PHENOL GUVES DARK BLUE

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18
Q

WHICH IS IDENTIFIED BY LUCAS REAGENT

A

ALCOHOLS

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19
Q

ALCOHOLS ARE WATER SOLUBLE GIVE REASON

A

DUE TO H BONDING

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20
Q

WHICH IS FORMED ON HEATING ETHYL ALCOHOL WITH BLEACHING POWDER ??

A

CHLOROFORM

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21
Q

ANISOLE REACTS WITH CONC H2SO4 AND HNO3 TO YEILD A MIXTURE OF—-

A

O-NITRO ANISOLE AND P-NITROANISOLE

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22
Q

MAIN PRODUCT OF KOBLE SCHMIDT RXN OF PHENOL IS—

A

SALICYLIC ACID

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23
Q

BY HYDROGENTION OF PHENOL — IS FORMED

A

CYCLOHEXANOL

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24
Q

ALCOHOLS REACTSWITH I2 AND A BASE TO GIVE YELLOW PPT OF

A

IODOFORM CHI3

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25
Q

PHENOL ON BEING HEATED WITH ZN POWDER FORM

A

BENZENE

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26
Q

ON HEATING FORMALDHEYDE WITH — BAKELITE IS FORMED

A

PHENOL

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27
Q

DIETHYL ETHER IS USED AS AN —

A

ANASETHETIC AGENT

28
Q

ON HEATING RX WITH NAOR , ROR IS FORMED THE RXN IS –

A

WILLIAMSON SYNETHSIS
RX+NAOR —->ROR +NAX

29
Q

ALCHOL IS –
AND PHENOL IS —

A

NEUTRAL AND ACIDIC

30
Q

ON HEATING ALCHOL WITH CONC H2SO4 FOR 160 -170 *C —– IS FORMED

31
Q

BY DEHYDRATION OF ETHYL ALCOHOL — AND — ARE OBTAINED

A

ETHYLENE AND DIETHYL ETHER

32
Q

RECTIFIED SPIRIT IS A MIXTURE OF —-% ALCHOL AND —%WATER

A

95.5 % AND 4.5%

33
Q

METHYL ALCOHOL IS PRIMARY ALCOHOL

34
Q

PHENOL IS CORROSIVE.

A

TRUE [ Definitions of corrosive. adjective. of a substance, especially a strong acid; capable of destroying or eating away by chemical action. ]

35
Q

PRIMARY ALCHOLS OXIDISE TO FORM KETONE

A

FALSE
[THEY GIVE ALDHEHYDE ]

36
Q

ETHERS ARE COMBUSTIBLE .

37
Q

BY FALL OF ETHYL ALCOHOL ON SKIN WOUND IS FORMED

A

FALSE
WOUND GET TREATED BY THAT

38
Q

BY THE ACTION OF PRIMARY AMINE AND NITROUS ACID

A

ALCOHOL AND N2

39
Q

PHENOL REACTS WITH BR2 WATER TO FORM

A

2 4 6 TRIBROMOPHENOL

40
Q

SODIUM ALKOXIDE REACTS WITH ALKYL HALIDE

41
Q

PHENOL REACT WITH CONC NITRIC ACID HNO3

A

PICRIC ACID
IT IS BITTER AND VERY STRONG EXPOLSIVE

42
Q

1*ALCOHOL REACTS WITH ACIDIFIED K2CR2O7 AND FORM

A

CARBOXYLIC ACID

any of a class of organic compounds in which a carbon (C) atom is bonded to an oxygen (O) atom by a double bond and to a hydroxyl group (―OH) by a single bond.

43
Q

DIASTASE ENZYME COVERTS STARCH TO

44
Q

ASPIRIN

A

2 ACETOXY BENZOIC ACID

45
Q

SPIRIT OF WINE [PURIFIED ALCOHOL]

A

ETHYL ALCOHOL

PREP; a continuous boiling mixture of two solutions, ethanol and water.

46
Q

ON BOILING AQ SOL OF BENEDIAZONIUM SALT

47
Q

PHENOL REACTS WITH HCHO

48
Q

DIETHYL ETHERS DOES NOT REACTS WITH NA WHY ??

A

ABSENCE OF ACIDIC H ATOM

49
Q

FIRE CAUSED BY ETHER CAN NOT BE EXTINGHUISHED BY WATER WHT??

A

AS ETHERS ARE INSOLUBLE IN WATER AND LIGHTER THAN WATER

50
Q

WHICH IS FORMED ON BURNING ETHERS ??

51
Q

NAME THE ENZYME WHICH CONVERTS MALTOSE TO GLUCOSE

52
Q

SULPHURIC ETHER IS KNOWN AS

A

DIETHYL ETHER

53
Q

RXN OF ETHERS WITH HI IS USED FOR DETCTION OF WHAT ??

A

ALKOXY [ZEISEL]

The Zeisel determination or Zeisel test is a chemical test for the presence of esters or ethers in a chemical substance.

54
Q

PHENOL REACTS WITH BR2 IN PRESSENCE IN CS2 TO FORM

A

O AND P BROMO PHENOL

55
Q

IN VICTOR MEYER TEST 1*ALCOHOL GIVES WHICH COLOUR ??

A

RED DUDE RED

56
Q

PHENOL REACTS WITH PHTALIC ACIDS ANHYDRIDE IN PRESSENCE OF H2SO4 TO FORM

A

PHENOLPHTHALEIN

Phenolphthalein is an organic compound which is used medicinally as a cathartic .It is used in acid-base titration as an indicator. As an indicator it turns pink to red in alkaline and is colourless in acid solutions.

57
Q

NAME THE PRIMARY ALCOHOL WHICH GIVES IODOFORM TEST

A

C2H5OH ETHANOL

58
Q

NAME THE RXN IN WHICH PHENOL REACTS WITH CHOLORFORM AND SODIUM HYDROXIDE TO FORM SALICYALDHEHYDE

A

RIEMER TIEMAAN RXN

59
Q

WHAT IS LUCAS REAGENT ??

A

Primary, Secondary and Tertiary Alcohols are classified based on their reactivity with the Lucas reagent. The reaction that occurs in the Lucas test can be seen as a nucleophilic substitution reaction. In this reaction, the Chloride in the zinc-chloride bond is replaced with a hydroxyl group originating from the given alcohol. Tertiary alcohols react the fastest

60
Q

How phenols can be obtained from benzene diazonium chloride?

A

By treating it with acidic water IN OTHER WORDS HYDRLYSIS SE

61
Q

WHAT IS RXN OF DIETHYL ETHER WITH HI ACID ??

A

When the reaction takes place, the product is formed are ethyl alcohol and ethyl iodine

62
Q

RIEMER TIEMANN RXN

A

When phenol, i.e. C6H5OH, is treated with CHCl3 (chloroform) in the presence of NaOH (sodium hydroxide), an aldehyde group (-CHO) is introduced at the ortho position of the benzene ring leading to the formation of o-hydroxybenzaldehyde. The reaction is popularly known as the Reimer Tiemann reaction.

63
Q

KOLBE SCHMIDT OR KOLBE RXN

A

Kolbe Schmitt reaction is a type of addition reaction, which starts with phenol that reacts with carbon dioxide and sodium hydroxide to give salicylic acid as the end product. The reaction is widely used for the synthesis of derivatives of salicylic acid.

64
Q

VICTOR MEYAR RXN

A

1] THE GIVEN ALCOHOLIS COVERTED INTO AN IODIDE BY CONC HI OR RED PHOSPHOURS AND IODINE
2]IODINE IS TREATED WITH SILVER NITRITE TO FORM NITROALKENE
3]NITRO ALKANE IS FINALLY TREATED WITH NITROUS ACID AND MADE ALKLINE WITH KOH

BLOOD RED WITH PRIMARY ALCOHOL
BLUE WITH SECONDARY ALCOHOL
NO COLOUR WITH TERTIARY ALCOHOL

65
Q

WHAT IS ABSOLUTE ALCHOL ?? HOW IT IS PREPARED??

66
Q

PURE PHENOL IS A COLOUR LESS SOLID BUT WHY IT CONVERTS INTO PINK AFTER SOMETIME

A

IN THE PRESENCE OF AIR PURE PHENOL OXIDIES INTO QUINONE LATER THIS QUINONE AGAIN COMBINES WITH 2 MOLECULES OF PHENOL BY H BOND AND GIVES PINK PHENONQUINONE

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