Aldehydes and Ketone Testing Notes Questions with Answers PDF Download – Test 75

MCQ 371: If ketones are not oxidized, then upon heating Fehling's solution remains:

1. unchanged only
2. blue only
3. white
4. unchanged and blue

MCQ 372: The enzymes in bacteria found in hot springs have an optimum temperature of:

1. 95 °C
2. 70 °C
3. 25 °C
4. 55 °C

MCQ 373: The greater electron repulsion in lone pairs in water molecule results in:

1. bonds being pushed further apart
2. bonds being pulled closer together
3. linear shape
4. distorting the molecular structure

MCQ 374: The mass of a substance which has been produced at an electrode is directly proportional to the quantity of electricity passed, is:

1. Faraday's first law
2. Faraday's second law
3. Faraday's third law
4. Newton's third law

MCQ 375: The attraction of higher nuclear charge is less than actual charge because of:

1. shielding effect
2. distance between outermost electrons (e^-) and nucleus (p⁺ and n⁰)
3. intramolecular forces
4. atomic radius