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Chemistry > Deck 11 (201 - 220) > Flashcards

Deck 11 (201 - 220) Flashcards

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1
Q
  1. Alcohols are formed by the attachment of:

a. -OH group to the hydrocarbon chain
b. -SH group to the hydrocarbon chain
c. -O group to the hydrocarbon chain
d. - NH2 to hydrocarbon chain

A

-OH group to the hydrocarbon chain

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2
Q
  1. An electron has the following set of quantum numbers: n
    n=4
    l=1
    m=0 and s= +1/2
    In which of the following orbitals would this electron be found?

a. 4s
b. 4px
c. 4dxy
d. 4f

A

4px

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3
Q
  1. PIC
A
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4
Q
  1. If -OH group is attached to benzene ring than the formed compound is a …
A

phenol

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5
Q
  1. Which of the following formulations indicate that the chemical equation is balanced?

a. the numbers of atoms of each element are the same on both sides of the equation
b. all of the coefficients are the same
c. the numbers of molecules on each side of the equation are equal
d. the sums of the coefficients on each side of the equation are equal

A

the numbers of atoms of each element are the same on both sides of the equation

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6
Q
  1. Molecular formular or pentane is?
A

C5H12

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7
Q
  1. Which of the diatomic elements does not have a single bond between its atoms?

a. hydrogen
b. bromine
c. oxygen
d. iodine

A

oxygen

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8
Q

208.Formula that shows arrangement of atoms in a. compound is called?

A

structural formula

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9
Q
  1. Write formula for the conjugative acid of HPO42-
A

H2PO4-

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10
Q
  1. General formula for primary amine is ?
A

R-NH2

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11
Q
  1. What is the symbol for arsenic?
A

As

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12
Q
  1. “No two electrons in the same atom have the same four quantum numbers” - it is a statement of ?
A

the Pauli Exclusion Principle

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13
Q
  1. PIC
A
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14
Q
  1. What is the mass of 0.5 mol of calcium carbonate?
    Ar(Ca) = 40
    Ar(C) + 12
    Ar(O) = 16
A

50g

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15
Q
  1. Draw condensed structure to cesium formate
A

HCOOCs

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16
Q
  1. When 20 ml of 1 mol.dm-3 HCl is added to 10 ml of 1 mol.dm-3 NaOH then the resulting solution is:

a. red
b. acidic
c. neutral
d. basic

A

acidic

17
Q
  1. PIC
A
18
Q
  1. Identify the acetamide:

a. CH3-NH2
b. CH3-CO-NH2
c. CH3-COO-NH4
d. CH3-CH2-NH2

A

CH3-CO-NH2

19
Q
  1. The elements of the noble gas family, except for helium, have an outer shell of —– electrons
A

8

20
Q
  1. How many moles of oxygen are required to burn 22.4 litres of ethane gas at Standard conditions ?

2 C2H6(g) + 7 O2(g) -> 4 CO2(g) + 6 H2O(g)

a. 11.2
b. 7
c. 3.5
d. 14

A

3.5

Chemistry (25 decks)

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