📚NCERT QuestionsCBSE12

175 solved questions with detailed explanations

81

Benzenediazonium fluoroborate is known for its:

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82

Which statement accurately describes the hybridization and geometry of the carbonyl carbon atom?

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83

Which vitamin deficiency causes 'night blindness' and 'xerophthalmia'?

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84

Arrange the following compounds in increasing order of their boiling points: CH3CH2CH2CHO, CH3CH2CH2CH2OH, H5C2-O-C2H5, CH3CH2CH2CH3.

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85

The two cyclic hemiacetal forms of glucose, α-D-glucose and β-D-glucose, differ only in the configuration of the hydroxyl group at which carbon atom?

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86

How can the activating effect of the -NH2 group in aniline be controlled to prepare monosubstituted aniline derivatives?

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87

The IUPAC name for H2N-CH2-CH2-NH2 is:

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88

A larger Kb value for an amine indicates:

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89

Which nitrogenous base is found in RNA but not in DNA?

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90

The carbonyl carbon atom in aldehydes and ketones is sp²-hybridised. Which of the following statements is true regarding its bonding?

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91

Why is sucrose considered a non-reducing sugar?

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92

Which of the following reducing agents can convert diazonium salts to arenes?

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93

Proteins are polymers of which type of amino acids?

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94

Which of the following methods can be used to prepare benzoic acid from toluene?

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95

Which of the following statements correctly describes the relative acidity of carboxylic acids compared to alcohols and phenols?

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96

What is the catalyst typically used for the esterification of carboxylic acids with alcohols?

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97

What is the general function of hormones in the body?

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98

What happens to a protein's biological activity when it undergoes denaturation?

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99

Which of the following statements is true regarding the basic character of amines?

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100

Which of the following is NOT a monosaccharide?

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