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WorksheetsCARBON AND MAGNETISM
Total questions: 26
Worksheet time: 25mins
Which formula represents a saturated hydrocarbon?
A
B
C
D
In which of the following compounds, — OH is the functional group?
Butanone
Butanal
Butanoic acid
Butanol
Pentane has the molecular formula C5H12.
5 covalent Bonds
12 covalent Bonds
16 covalent Bonds
17 covalent Bonds
Which of the following are correct structural isomers of Butane?
(i) & (iii)
(ii) & (iv)
(i) & (iv)
(i) & (ii)
A molecule of CO2 (carbon dioxide) has -
Only single bonds
Only double bonds
Only triple bonds
1 single & 1 double bond
What is the Structural formula of Vinegar?
HCOOH
CH3COOH
CH3-CH2-OH
CH3-OH
The boiling points of alkane molecules increase as their molecular sizes increase.
True
False
The direction of the magnetic field is taken to be the direction in which a
______ pole of the compass needle moves inside it.
North
South
Refer the diagram. A wire carries a current, creating a magnetic field around itself as shown. The current in the wire is:
Directed to the right
Directed to the left
Equal to the magnetic field
In the same direction as the magnetic field
The relative strength of the magnetic field is shown by the degree of closeness of the field lines.
false
true
can't say
Identify the poles of the magnet in the given figure.
NORTH
SOUTH
One is north and the other is south
Can't predict
Which of the following is not the source of magnetic field:
Moving charge
Electric current
Magnet
A small piece of iron
This diagram shows the electric field surrounding a bar magnet
yes
no
The region surrounding a magnet, in which the force of the magnet can be detected, is said to have a _______________.
magnetic field
electric field
gravitational field
both electric and magnetic field
Is magnetic field a scalar quantity or vector quantity?
scalar
vector
both
none
Inside the magnet, the direction of field lines is from its
north to south
south to north
mag. field do not move inside a magnet.
none
The magnetic field lines are__________.
closed curves
open curves
semi circular
The relative strength of the magnetic field is shown by the degree of closeness of the field lines.
false
true
can't say
needle deflects towards east or west?
east
west
confused
north
The magnetic field produced by a given current in the conductor ___________ as the distance from it increases.
decreases
increases
remains same
none
the magnetic field produced around a straight conductor due to current in it is given by
Fleming's right hand rule
right hand thumb rule
Fleming's left hand rule
left hand thumb rule
Which of the following correctly describes the magnetic field near a long straight wire?
The field consists of straight lines perpendicular to the wire.
The field consists of straight lines parallel to the wire.
The field consists of radial lines originating from the wire.
The field consists of concentric circles centred on the wire.
which of the following is not attracted by a magnet?
steel
cobalt
brass
nickel
The magnetic field lines:
intersect at 900 to each other.
intersect at 450 to each other.
do not cross one another
cross at 600 to each other
A plotting compass is placed near the south pole of a bar magnet. The pointer of the compass:
point away from the south pole
point parallel to the south pole
point towards the south pole
point at right angles to the south pole
