Worksheets10class Polycet Test 6
Total questions: 60
Worksheet time: 30mins
Name
Class
Date
1.
The point of maximum distance at which eye lens can form image is
a)
Near point
b)
Far point
c)
Focal point
d)
Retina
2.
Which of the following elements have high atomic weight(barium, Sodium, Tellurium, Magnesium)
a)
barium
b)
Sodium
c)
Tellurium
d)
Magnesium
3.
The ores of the metals at the bottom of the activity series are present as
a)
Free state
b)
Sulphides
c)
Carbonates
d)
Carbonates, Sulphides
4.
Element having metallic and non-metallic properties is called
a)
Metal
b)
Non-metal
c)
Metalloid
d)
No-metal
5.
One of the ores of Alluminium is
a)
Magnetite
b)
Bauxite
c)
Zincite
d)
Haematite
6.
Pyrolusite is an ore of
a)
Zn
b)
Al
c)
Mn
d)
Ng
7.
If a force of F is required to move a unit positive charge to a distance of l meters is then F is called
a)
Force
b)
Electric power
c)
Potential Difference
d)
Electric current
8.
CaSO4 is (Acid, Base, Salt, Acidic salt)
a)
Acid
b)
Base
c)
Salt
d)
Acidic salt
9.
R1 and R2 are resistors and they are connected In parallel and series. In which case current will be more in circuit.
a)
When connected in series
b)
When connected in parallel
c)
In parallel and series current will be same
d)
Cannot compare
10.
When NaHCO3 reacts with H2SO4 then Na2SO4, ____ and Carbondioxide are formed.
a)
Water
b)
Base
c)
Hydrogen
d)
Oxygen
11.
The Formula of Zinc Blende is
a)
CuFeS
b)
ZnO
c)
ZnSO4
d)
ZnS
12.
When NaHCO3 reacts with H2SO4 then___ , Water and Carbondioxide are formed.
a)
Na2SO4
b)
Base
c)
Hydrogen
d)
Oxygen
13.
When the object is between F and P before convex lens the image size is
a)
Equal to object
b)
Bigger than object
c)
Small than Object
d)
Point size
14.
Which one of the following is weak base?(Mg(OH)2, NaOH, NH4OH, Ca(OH)2)
a)
Mg(OH)2
b)
NaOH
c)
NH4OH
d)
Ca(OH)2
15.
The angle between incidence ray and normal ray is called as _____
a)
angle of normal
b)
angle of reflection
c)
angle of ray
d)
angle of incidence
16.
Tooth decay may start when the pH in mouth is
a)
Greater than 7
b)
Greater than 5.5
c)
Lower than 5.5
d)
Equal to 6.5
17.
The wave length of Violet colour is___ Red
a)
Equal to
b)
More than
c)
Less than
d)
Cannot ompare
18.
A solution turns red litmus to blue, its pH is likely to be
a)
1
b)
4
c)
5
d)
10
19.
The wave length of Red colour is___ Blue
a)
Equal to
b)
More than
c)
Less than
d)
Cannot ompare
20.
Where the image is formed, when the object is placed at the centre of curvature (C2) in front of the lenses
a)
at C1
b)
between F1 and C!
c)
at infinte
d)
beyond C1
21.
Which medicine is used for treating indigestion?
a)
Antibiotic
b)
Analgesic
c)
Antacid
d)
Antiseptic
22.
Identify the week acid from Vinegar, Battery acid, Lemon juice and gastric fluid
a)
Battery acid
b)
Vinegar
c)
Gastric fluid
d)
Lemon juice
23.
Identify the week acid from Vinegar, Milk, Lemon juice and Battery acid
a)
Milk
b)
Vinegar
c)
Lemon juice
d)
Battery acid
24.
Identify the strong acid from Vinegar, Milk, Lemon juice and gastric fluid
a)
Milk
b)
Vinegar
c)
Gastric fluid
d)
Lemon juice
25.
When Sodium oxide reacts with HCl, ___ and water are formed.
a)
Na2Cl
b)
NaCl2
c)
NaCl3
d)
NaCl
26.
In curved mirrors magnefication is ______for inverted image
a)
Possitive
b)
Negative
c)
No sign
d)
Any sign
27.
The reaction of an acid with base to give a salt and water is known as
a)
Reduction
b)
Neutralisation
c)
Oxidaion
d)
Crystallisation
28.
When a metal oxide reacts with acid, salt and water are formed.
a)
False
b)
True
c)
We cannot say.
d)
Some times true, some times false
29.
This is a Chemical change
a)
The process of digestion
b)
Changing water to ice
c)
Cooling of water vapour to water
d)
Making Lemon juice
30.
This is a physical change
a)
The process of rusting of iron
b)
The process of addition of powdered lime to water
c)
The process of Respiration is
d)
Cooling of water vapour to water
31.
This is a physical change
a)
The process of rusting of iron
b)
The process of addition of powdered lime to water
c)
The process of Respiration is
d)
Evaporation of water to water vapour
32.
The image formed by a convex mirror is
a)
Always real
b)
Always virtual
c)
Can be both real and virtual
d)
None of these
33.
Which chemical is used in the manufacture of paper industry?
a)
CaSO4.2H2O
b)
NaCl
c)
Na2CO3
d)
NaHCO3
34.
Magnification formula
a)
v/u
b)
v/-u
c)
-v/u
d)
-u/v
35.
To get diminished,inverted,real image by a concave mirror of 10 cm focal length we place object at….cm
a)
5
b)
10
c)
15
d)
25
36.
Acidic substances contain these ions
a)
OH-
b)
H+
c)
Cl-
d)
Na+
37.
Which gas is liberated, when sodium hydroxide reacts with Zinc(Hydrogen, Nitrogen, Oxygen, None)
a)
Hydrogen
b)
Nitrogen
c)
Oxygen
d)
None
38.
This acts as mild antiseptic
a)
Washing soda
b)
Baking soda
c)
Gypsum
d)
Plaster of paris
39.
Where should we place the object infront of a concave mirror to get a virtual image
a)
At F
b)
Between P and F
c)
At C
d)
Between C and F
40.
The color of Red litmus paper in NaOH is
a)
Blue
b)
Yellow
c)
Pink
d)
No colour change
41.
The n+l value of 3d orbital is
a)
4
b)
3
c)
5
d)
6
42.
An observer can see _______ colours in rainbow if he looks at an angle from 40° to 42°
a)
Only one colour
b)
Red
c)
Violet
d)
All Seven colours
43.
An alloy of Copper, manganese, nickel is called
a)
Brass
b)
Bronz
c)
Manganin
d)
Nichrome
44.
2KClO3 + Heat--> 2KCl + 3O2. Which reaction is this?
a)
It is endothermic and ecomposition reaction
b)
It is combination reaction
c)
It is exothermic decomposition reaction
d)
It is photochemical exothermic reaction
45.
When NaHCO3 reacts with ___ then NaCl,Carbon dioxide and water are formed.
a)
HCl
b)
Base, oxygen
c)
Hydrogen. Caron dioxide
d)
Oxygen, hydrogen
46.
As we go from top to bottom in groups the mettalic nature
a)
increases
b)
remains constants
c)
decrease
d)
none
47.
The color of Red litmus paper in acid is
a)
Blue
b)
Yellow
c)
Pink
d)
No colour change
48.
When the object is between F and C(2f) before convex lens the image is formed
a)
at Focus
b)
at Center of curvature(2f)
c)
Beyond C(2f)
d)
Between F and C(2f)
49.
It is available in every house
a)
Concave mirror
b)
Concvex mirror
c)
Plane mirror
d)
None
50.
Mg(OH)2 is (Acid, Base, Salt, Acidic salt)
a)
Acid
b)
Base
c)
Salt
d)
Acidic salt
51.
The distance between pole and centre of curveture is_____
a)
Focal length
b)
Radius of curvature
c)
Objest distance
d)
Image distance
52.
When____ reacts with H2SO4 then K2SO4,Carbon dioxide and water are formed.
a)
K2CO3
b)
Base, oxygen
c)
Hydrogen. Caron dioxide
d)
Oxygen, hydrogen
53.
The most abundant metal in earth crust is
a)
Alluminium
b)
Potassium
c)
Calcium
d)
Iron
54.
Na2CO3 is (Acid, Base, Salt, Basic salt)
a)
Acid
b)
Base
c)
Salt
d)
Basic salt
55.
In curved mirrors image distance is positive for ______image
a)
real
b)
virtual
c)
real and inverted
d)
inverted
56.
_______ move from high potential to low potential.
a)
Electrons
b)
Cations
c)
anions
d)
Atoms
57.
When KHCO3 reacts with H2SO4 then K2SO4, ___ and____ are formed.
a)
Carbon dioxide, Water
b)
Base, oxygen
c)
Hydrogen. Caron dioxide
d)
Oxygen, hydrogen
58.
The color of Phenophthalein in acid is
a)
Red
b)
Yellow
c)
Pink
d)
No colour change
59.
The resistance of a resistor depends on
a)
Nature of materials
b)
Length of the elements
c)
Cross-sectional area
d)
Nature, length and cross section
60.
When K2CO3 reacts with ___ then KCl,Carbon dioxide and water are formed.
a)
HCl
b)
Base, oxygen
c)
Hydrogen. Caron dioxide
d)
Oxygen, hydrogen
100 %
