1.d
2.c
3.d
4.b
5.c
6.d
7.d
8.a
9.c
10.d
11.c
12.d
13.a
14.c
15.c
16.c
17.d
18.b
19.b
20.d
Showing posts with label Chemistry. Show all posts
Showing posts with label Chemistry. Show all posts
Saturday, 18 May 2013
Chemistry test Chapter 15+16 Book 2
1.
Which of the following is
requirement of fertilizer
a)
It should be deliquescent
b)
It should be cheap to
manufacture
c)
It should be stable in
soil
d)
All
2.
In nitrogen fertilizer,
nitrogen is the
a)
Main constituent of
protein
b)
Impart green color to
plants
c)
Both a and b
d)
None of these
3.
Different oxides of Si,
Ca and Al combine together in burning zone gives
a)
Calcium aluminate
b)
Calcium ferrate
c)
Calcium silicate
d)
All
4.
In bleaching process, the
pulp is dried by
a)
Steam
b)
Hot air
c)
Heating
d)
All
5.
Which of the following is
incorrect statement about nitrogen importance
a)
It enhances plants growth
b)
It is involved in the
synthesis of protein and nucleic acids
c)
It accelerates fruits and
flowers growth
d)
It is involved in the
chlorophyll synthesis
6.
Calcarious material
include
a)
Lime stone
b)
Marble
c)
Chalk
d)
All of these
7.
The potassium present in
plant, help the plant to
a)
Form starch, sugar and
fibrous material
b)
Ripen the seeds and
fruits
c)
Increases the resistant
against disease
d)
All of above are correct
8.
Which of the following
statement is incorrect about urea
a)
It is a synthetic
fertilizer
b)
It is a natural
fertilizer
c)
It provides
micronutrients to the plants
d)
It is an inorganic water
soluble compound
9.
What is clinker
a)
Roasted calcareous
material
b)
Roasted argillaceous
material
c)
Roasted calcareous and
argillaceous material
d)
Roasted gypsum
10.
Which of the following
raw material is not present in the cement
a)
Lime stone
b)
Gypsum
c)
Blast furnace
d)
Red lead
11.
Which sequence of steps
is correct for the manufactures of cement
a)
Crushing, heating,
mixing, grinding
b)
Crushing, mixing,
heating, grinding
c)
Crushing, grinding,
mixing, heating
d)
Mixing, heating,
grinding, crushing
12.
The sequence of zone in
the rotary kiln are as
a)
Dry zone, burning zone,
decomposition zone, cooling zone
b)
Cooling zone, burning
zone, decomposition zone, dry zone
c)
burning zone, Cooling
zone, decomposition zone
d)
Dry zone, decomposition
zone, burning zone, cooling zone
13.
The composition of
mixture of clay and lime stone in the raw material is
a)
75% lime stone and 25%
clay
b)
25% lime stone and 75%
clay
c)
15% lime stone and 55%
clay
d)
55% lime stone and 15%
clay
14.
The important function of
burning zone in the rotary kiln is
a)
To dry the moisture of
slurry
b)
Decompose lime stone to
unslaked lime
c)
Combination of different
oxides like CaO, SiO2, Fe2O3 and Al2O3
d)
To reduce the impurities
15.
The percentage of
nitrogen in ammonia is
a)
80%
b)
92%
c)
82.35%
d)
50%
16.
Which is the chemical
formula of calcium super phosphate
a)
CaH2PO4
b)
CaHPO4
c)
Ca(H2PO4)
d)
None of these
17.
The elements like
calcium, nitrogen and phosphorous added into the soil in large amounts are
called
a)
Basic elements
b)
Trace elements
c)
Additives
d)
Nutrient elements
18.
Surfactants are organic
compounds, used in detergents which reduced the
a)
Viscosity of water
b)
Surface tension of water
c)
Boiling point of water
d)
Wetting ability of water
19.
In NWFP, the phosphate
fertilizer are produced at
a)
D.I Khan
b)
Haripur
c)
Nowshera
d)
Dargai
20.
Ammonia gas used directly
as a fertilizer injected into the soil at a depth of about
a)
Two inches
b)
Three inches
c)
Five inches
d)
Six inches
Monday, 22 April 2013
Chemistry test Chapter 4 Book 1 (Answer key)
1.c
2.a
3.a
4.a
5.c
6.c
7.b
8.a
9.a
10.d
11.a
12.C
13.d
14.b
15.d
16.c
17.b
Chemistry Test Chapter 4 book 1
1.
Sugar is an example of
a) Ionic crystal
b) Covalent crystal
c) Molecular crystal
d) Metallic crystal
2.
Electron sea theory was proposed by
a) Drude
b) Loren
c) Pauling
d) Fritz London
3.
Give the name of following system
a≠b≠c ; alpha=gama=900 ; beta
≠900
a) Monoclinic
b) Orthorhombic
c) Tetragonal
d) Triclinic
4.
Which functional group is present in
glucose
a) CHO
b) C2O4
c) C2O2
d) COOH
5.
Maximum packing efficiency which is
present in crystals is
a) 62%
b) 72%
c) 74%
d) 100%
6.
74% packing efficiency is associated
with ______ crystalline system
a) Hexagonal
b) Face centered cubic
c) Both a and b
d) Monoclinic
7.
By increasing size of ion, lattice
energy
a) Increases
b) Decreases
c) Remains constant
d) Is not regularly changed
8.
Which of the following is face
centered cubic arrangement
a) ABC-ABC
b) AB-AB
c) ACB-ACB
d) CBA-ABC
9.
Nature of copper crystal is
a) Metallic
b) Ionic
c) Covalent
d) Molecular
10.
Ionic solids are characterized by the
a) Low melting point
b) Good conductivity in solid state
c) High vapor pressure
d) Solubility in the polar solvent
11.
Mostly crystals show good cleavage
because their atoms, ions or molecules are
a) Arranged in planes
b) Weakly bonded together
c) Spherically symmetric
d) Strongly bonded together
12.
The coordination number of a body
centered atom in a crystal is
a) 4
b) 6
c) 8
d) 12
13.
Metallic bond has been explained by a
number of theories, LIUS PAULING has proposed the theory
a) MOT
b) Electron Gas theory
c) Band theory
d) VBT
14.
Hardness of diamond is attributed to
the
a) Strength of ionic bond in the
structure
b) Three dimensional net work of
covalent bond
c) Absence of valence electron in C atom
d) Tetrahedral geometry of each carbon
atom
15.
All the metals shine when they are
freshly cut because
a) Conductivity of metal increases
b) Cutting process gives energy to metal
atoms
c) Electron become less delocalized
d) Excited electron emits energy when
de-excited
16.
Existences of different compound in
the same crystalline form is called
a) Anisotropy
b) Polymorphism
c) Isomorphism
d) Allotropy
17.
Ionic solids become brittle under
stress because
a) Ionic solids are unable to bear
stress
b) Same ions start repelling each other
c) This is the property of ionic solids
d) All ionic solids do not show same
behavior
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