Chemistry Nust
Chemistry Nust
1. What is the chemical name of SANDUR?
A . Tetraplumbic oxide
B . Triplumbic oxide
C . Triplumbic
tetraoxide
D . Lead dioxide
2. The velocity of
electron in outermost shell is?
A . Minimum
B . Intermediate
C . Maximum
D .
None of these
3. Which of the following has the highest boiling point?
A . He
B . Ne
C . Ar
D . Kr
4. Smallest element in the periodic table is?
A . Uranium
B .
Lithium
C . Fluorine
D . Hydrogen
5. Which of the following has the higher bond forces among
its molecules?
A . Hydrogen Fluoride
B . Neon
C . Water
D . Hydrogen
6. Which one of the
following is used in making lozenges?
A . Formaldehyde
B . Acetone
C . Acetaldehyde
D . Methanol
7. Each carbon in benzene
is
A . sp3 hybridized
B
. sp3 hybridized
C . sp hybridized
D . none of these
8. The indicator is a colored _ _____ compound?
A . basic
B . acidic
C . organic
D . inorganic
9. Which of the following doesn’t have an incomplete d orbits?
A . Ag
B . Au
C . Cu
D . all of these
10. The aromatic compound having the functional group
"OH" attached to it is?
A . Carbolic acid
B .
Phenol
C . Alcohol
D . none of these
11. Grignard Reagent shows reaction:
A . Endothermic
B . Exothermic
C . Neutral
D . none of these
12. Group 1A and 11A are known as:
A . P block elements
B .
S block elements
C . Alkali Metals
D . Alkaline Earth Metals
13. Covalent hydrides are:
A . Gaseous
B . Solid
C . Liquids
D . Both a & c
14. IUPAC name of propionaldehyde is:
A . Butanal
B .
Propanal
C . Acetaldehyde
D . Methanal
15. Which one has fruity smell?
A . Alcohol
B .
Ethers
C . Carboxylic Acids
D . Esters
16. Boiling point of heptanes is:
A . 98
B . 160
C .
200
D . 140
17. Which one of these are gasses?
A . methane
B . ethane
C . propane
D . all of these
18. Which one of this is toxic?
A . Nitrous oxide
B .
Nitric oxide
C . Sulphur dioxide
D . Carbon dioxide
19. Colligative
Properties depends upon:
A . solute
B . solvent
C . both a and b
D . none of
these
20. Oxidation state
of sulphur in H2SO4?
A . +2
B . +6
C . +4
D . -2
21. If the value of
Kc is larger than what will be the effect on reaction?
A . Is at equilibrium
B . Not at equilibrium
C . The
direction will move in the reverse direction
D . The reaction moves in the
forward direction
22. Which one is metalloid?
A . Si
B . S
C . C
D . O
23. Which of the following group show halogens?
A . N to Bi
B . F to
At C .
C to Sn
D . H to Cs
24. Friedel craft’s
reaction gives?
A . Benzene
B . Nitrobenzene
C . Alkene
25. Which one is the carbonyl protecting group?
A . Amino Derivatives
B . Alcohol
C . Ester
D . Carboxylic
acid
26. Mass spectrometer
is used to find:
A . Charge to mass
ratio of ion
B . Charge to mass ratio of atom
C . Mass of ion
D . Mass of atom
27. Fluorine is reactive due to:
A . Large size
B . Low electro negativity
C . Low ionization
potential
D . Low dissociation energy
28. Formula of fructose is:
A . C5H10O6
B . C5H10O5
C .
(C6H12O6)n
D . C6H12O6
29. Borax bead test is used to separate:
A . Metallic anions
B . Metallic cations
C . Nonmetallic cations
D . Nonmetallic anions
30. If electrons are loosely packed then:
A . Their melting point is high
B . They act as solid
C .
Their boiling point is high
D . They conduct electricity
31. The bond
angle of NF3 is:
A . 120
B . 107.5
C . 104
D .102.5
32. For colligative properties the solution should be:
A .
Dilute
B . Concentrated
C . Saturated
D . Electrolyte
33. Paraldehyde is
formed by:
A . Formaldehyde
B . Acetaldehyde
C . Acetone
D . none of these
34. Ketones and aldehydes are reduced in the presence of
catalyst:
A . Pt
B . Al2O3
C . R-Mg-X
D . SOCI2
35. Oxides of xenon
are formed from:
A . XeF4
B . XeF6
C . XeF2
D . all of these
36.
Transition elements appear colored due to
A . D-f transition
B . d-d transition
C . P-d transition
D . P-p transition
37. Out of which of
the following alcohols do not react to form alkyl halides?
A . HCl
B . SOCl2
C
. PCl3
D . Br2
38. Formula of bleaching powder is:
A . Ca(OCl)
B . Ca(OCl)2
C . Ca (O2Cl)
D . Ca(OCl)Cl
39. What is the chief ore of fluorine?
A . Cryolite
B .
Fluorspar
C . Dolomite
D . Both a and b
40. Which one of the
following is used as an anaesthetic?
A . Acetone
B . Ethyl alcohol
C . Methyl
alcohol
D . Halothane
41. What is the oxidation state of Mn in K2MnO4?
A . 12
B .
8
C . 6
D . 7
42. A solution has Ph
of 10. What is the value of [OH-]?
A . 10-7
B . 106
C . 104
D . 10-4
43. Which member of
5A group has no stable isotope?
A . Bismuth
B . Phosphorous
C . Nitrogen
D . Arsenic
44. Which group of elements shows greatest electrical
conductivity?
A . Alkali metals
B .
Alkaline earth metals
C . Halogens
D . Coinage Metals
45. Noble gasses
have?
A . High ionization energy
B . Low ionization energy
C . Zero ionization
energy
D . none of these
46. The basic character of alkali metal oxides:
A .
Decreases down the group
B . Remains same
C . Increases down the group
D . none
of these
47. Half-life of an element is 5 days. If we have 50,000 of
its atoms, then how many atoms would be left after 10 days?
A . 15000
B . 25000
C . 50000
D . none of these
48. We have two half
cells connected with a salt bridge (indicates that it’s a galvanic cell)
equation (given) electrons flow from?
A . Cathode to anode through external
circuit
B . Anode to cathode through external circuit
C . Anode to cathode
through salt bridge
D . Cathode to anode through salt bridge
49. When CH2=CH2
reacts with a halogen acid, then what's the product?
A . Alkyl halide
B .
Alkane
C . Alkyl
D . Alkene
50. Which one of the following does not
have allotropes?
A . N
B . P
C . As
D . Sb
