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1009 available questions

Chemistry · Question 51

Benedict's solution is the combination of:

  1. Cu(OH)2 + NaOH + Tartaric acid (C4H6O6)
  2. Cu(OH)2 + NaOH + Citric acid (C6H2O2)
  3. Ag(NH3) 0H + NaOH + H2SO4
  4. NaCl + NaOH + Citric acid
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Correct answer: A

Cu(OH)2 + NaOH + Tartaric acid (C4H6O6)

Chemistry · Question 52

How do the 'p' arbitals px, py, pz differ from each other

  1. size
  2. shape
  3. orientation
  4. capacity
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Correct answer: C

orientation

Chemistry · Question 53

In secodnary alkyl halides how many H atoms are attached to Carbon atom which attached with halogen?

  1. 2
  2. 1
  3. 3
  4. 4
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Correct answer: B

1

Chemistry · Question 54

All alkaline metals are white in colour except

  1. Beryllium
  2. Magnesium
  3. Calcium
  4. Strontium
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Correct answer: A

Beryllium

Chemistry · Question 55

Melting and boiling point of transition elements is higer due to ___________?

  1. Higher binding energies
  2. Strong metallic bonding
  3. Hardness
  4. All of these
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Correct answer: D

All of these

Chemistry · Question 56

Which one has Prussian biue colour?

  1. Ferric hexa cyano ferrate (II)
  2. Iron (IIII) hexa cyano ferrate (II)
  3. Sodium hexa cyano ferrate (lIl)
  4. BothA & B
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Correct answer: D

BothA & B

Chemistry · Question 57

The ionization enery increases from left to right in a period due to increase in

  1. nuclear charge
  2. number of electrons
  3. atomic number
  4. all of these
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Correct answer: D

all of these

Chemistry · Question 58

Which of the followings shows maximum boiling points?

  1. primary alcholol
  2. secondary alcohol
  3. tertiary alcohol
  4. all of above
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Correct answer: C

tertiary alcohol

Chemistry · Question 59

During comustion analysis MgCIO4 is used to absorb_____________________.

  1. oxygen gas
  2. hydrogen gas
  3. water vapors
  4. alcohol
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Correct answer: C

water vapors

Chemistry · Question 60

The temperature above which two conjugate solutions merge into one another is
Called.

  1. Critical solution temperature
  2. Critical solution point
  3. Absolute solution temperature
  4. Absolute solution point
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Correct answer: A

Critical solution temperature