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Title: science
Description: it is only ment for christ school students,who belong to 10 std
Description: it is only ment for christ school students,who belong to 10 std
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83-E
2
CCE RF
: 83-E
Code No
...
objective
and
ii)
Space has been provided against each objective type question
...
iii)
For subjective type questions enough space for each question has
been provided
...
iv)
Candidate should not write the answer with pencil
...
( Except Graphs, Diagrams & Maps )
v)
Answer only one question each for the choice questions
...
vii)
In case of Multiple Choice, Fill in the blanks and Matching questions,
scratching / rewriting / marking is not permitted, thereby rendering
to disqualification for evaluation
...
ix)
Candidates have extra 15 minutes for reading the question paper
...
( SPACE FOR ROUGH WORK )
226160
RF-116
3
CCE RF
83-E
Four alternatives are given for each of the following questions / incomplete
statements
...
Choose the
correct alternative and write the complete answer along with its letter in
10 1 = 10
the space provided against each question
...
The correct equation of nuclear fusion reaction is
(A)
1
1H 1 H2
(B)
1H
(C)
2
...
The major constituent of freshly obtained molasses is
(A)
(B)
fructose
(C)
3
...
The minimum distance between the source of sound and the reflecting
surface necessary to cause echo is
(A)
(B)
17 m
(C)
4
...
In a triad of A, B, C elements if the atomic masses of A and C respectively
are 100 and 200, then the atomic mass of B is
(A)
(B)
175
(C)
5
...
If the fermentation of molasses during the manufacturing of ethyl alcohol
is delayed then the conclusion that can be drawn is
(A)
molasses is diluted
(B)
molasses is not diluted
(C)
more yeast is added
(D)
temperature is maintained around 410 K
...
4
CCE RF
The transformer among the following in which output voltage is more than
the input voltage is
(A)
(C)
7
...
Cowdung
Lead Vapour
(D)
Plastic
...
83-E
The correct group among the following is
Diseases
(A)
Hepatitis-B
HCV
Liver Cirrhosis
(B)
Syphillis
Neisseria
Ulcers on nose
(C)
Herpes
HSV
Blisters on and around genitals
(D)
10
...
A tall plant with red flowers is crossed with a dwarf plant with white
flowers
...
TtRr
ttrr
(D)
ttRr
...
Match them with their constituents
41=4
given in List-B and uses given in the List-C :
List - A
List - B
List - C
(A) Stainless Steel
(a) Iron + nickel + cobalt +
(i)
Electrical contact part
aluminium
(b) Iron + carbon + chromium +
(B) Alnico
(ii) Sports medal
nickel
(C) Invar Steel
(c) Copper + zinc + tin
(D) Brass
(d) Iron
+
carbon
+
(iii) Surgical instruments
nickel
(iv) Aeroplane body
( large quantity )
(e) Aluminium
+
copper
+
(v)
Permanent magnets
magnesium + manganese
(vi) Precision
(f) Copper + zinc
measuring
instrument
...
What is a Solar Cell ?
13
...
( SPACE FOR ROUGH WORK )
226160
RF-116
[ Turn over
83-E
6
CCE RF
14
...
15
...
‘Soda glass must not be used in making laboratory heating apparatus
...
17
...
The normal thyroxine level in an adult is around 08 ng/dl to 18 ng/dl
...
After a prolonged hormonal treatment the
thyroxine level was about 34 ng/dl
...
Answer the following questions :
19
...
20
...
21
...
The atomic size increases down the group in the periodic table
...
Explain the method of extraction of amorphous silicon with the help of
chemical equation
...
Steam is passed over red hot silicon
...
Calculate the period of a wave, which is having the wavelength 17 m and
wave velocity 340 m/s
...
Steam engines of Indian railways are replaced with diesel engines
...
25
...
Find the ratio between their rates of
diffusion
...
Draw the diagram of a petrol engine
...
Imagine that a listener who is at rest is listening to the sound of frequency
20 Hz produced by a stationary source
...
28
...
29
...
OR
Write the effects of acid rain on aquatic organisms and human beings
...
Draw the diagram of a dicot plant
...
Explain the structure of HIV
...
‘Roof top gardening may be a solution for both energy crisis and
management of kitchen wastes
...
33
...
OR
Mention any four features of Neanderthal Man
...
‘Mammals are more evolved than amphibians
...
5 3 = 15
Answer the following questions :
35
...
OR
What is biasing a diode ? Write two differences between the two kinds of
biasing
...
Draw the diagram of induction coil and label the following :
(a)
Primary coil
(b)
Make and break arrangement
...
8
CCE RF
Draw the diagram showing electroplating of a brass article with silver and
label the following :
(a)
Anode
(b)
Electrolyte
...
Explain the structure and function of a neuron
...
What is a monohybrid cross ? What is the ratio of tall and dwarf plants
obtained in F 2 generation ? Represent the same with the help of a checker
board
...
3 4 = 12
Answer the following :
40
...
OR
State the principle of rocket
...
Write the relationship between
them
...
Write the structural formulae of the following :
(a)
Butene
(b)
Ethyne
(c)
Benzene
(d)
Cyclohexane
...
(b) Ethane,
(c) Isobutane
...
( SPACE FOR ROUGH WORK )
226160
RF-116
Title: science
Description: it is only ment for christ school students,who belong to 10 std
Description: it is only ment for christ school students,who belong to 10 std