SAMPLE PAPER FOR NATIONAL SCIENCE OLYMPIAD (NSO)STAGE-II CLASS -IX
Time : 1 Hr.
Max. Marks : 50
GENERAL INSTRUCTIONS 1. The booklet given in the examination hall will be the Question Paper. An OMR Answer Sheet will also be provided along with the Question Paper. 2. A candidate has to write his/her answers in the OMR sheet by darkening the appropriate bubble with the help of HB Pencil as the correct answer(s) of the question attempted. 3. Paper carries 50 questions. There are 2 sections, 15 in Section I and 35 in Section II. 4. Blank papers, clip boards, log tables, slide rule, calculators, mobile or any other electronic gadgets in any form is not allowed. 5. Write your Name & Roll No. in the space provided in the bottom of this booklet. 6. Before answering the paper, fill up the required details in the blank space provided in the answer sheet. 7. There is no negative marking. Do not spend too much time on a particular question. 8. No rough sheets will be provided by the invigilators. All the rough work is to be done in the blank space provided in the question paper. 9. In case of any dispute, the answer filled in the OMR sheet available with the institute shall be final.
Name : ____________________________________________ Roll No. : _______________________________
MENTAL ABILITY 1.
The value of the following expression is : 1 1 1 1 1 1 1 1 1 1 a a 1 a 2 a 3 a4
(A)
2.
4.
(B)
2 3
(B)
If x +
1 = x
5 then x 2 +
1 x2
(D)
a 1 a4
a b + : b a
(C) 2
(D) 4
(D) – 4
=?
(B) 1
(C) 2
(D) 4
(B) 4 3
(C) 9 3
(D) None
(C) p = q = 1
(D) p =
log p + log q = log (p + q) only if (A) p = q = zero
7.
3 2
a 1 a 1
Three cubes of volumes, 1 cm3, 216 cm3 and 512 cm3 are melted to form a new cube. What is the diagonal of the new cube is (A) 9 2
6.
(C)
If (7)–1/3× (7)7/15 = (7)x/5 + 4/3 then find the value of x. (A) – 6 (B) 6 (C) 7
(A) 3 5.
a 1 a4
If (a3 + b3)2 = (a2 + b2)3 , then find the value of (A)
3.
a3 a
(B) p =
q2 1 q
q q 1
Radius of the two circles are r1 and r2 and there areas are A1 and A2 respectively. If r1 = 2r2 then relation between A1 and A2 is(A) A1 = 4A2 (B) 4A1 = A2 (C) A1 = 2A2 (D) 2A1 = A2
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8.
In the fig. O is centre of a circle. AB is chord and length of OA = 13 cm. If OM AB and OM = 5 cm, then AB is
O
A
(A) 24
(B) 12
M
B
(C) 20
(D) 11
(C) 688
(D) None of these
Directions : (9 to 10) Find the missing numbers : 9.
7, 24, 75, 228, ? (A) 684
(B) 686
(A) 36
(B) 9
10. (C) 25
(D) 64
Direction : (11) In the following questions : means ‘is equal to’ means ‘is not equal to’ + means ‘is greater than’ – means ‘is less than’ × means ‘is not greater than’ ÷ means is not less than’ Now select the correct alternative in each of the following questions : 11.
12.
a – b – c implies (A) a – b + c
(B) b + a – c
(C) c × b + a
(D) b + a ÷ c
Two cyclists approach each other on a straight road, each cycling at 15 miles per hour, when they are 30 miles apart, a housefly alights on one bicycle, then dashes off to the other. It shuttles back and forth between the two at 20 miles per hour until the riders meet. What is the distance has it travelled ? (A) 20 miles (B) 10 miles (C) 5 miles (D) 15 miles
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Direction : (13) In the following question, select the diagram out of the four that best represents the relationship among the items given in the question : 13.
Snakes, poisonous, drugs
(A)
14.
(B)
(C)
(D)
Monika went to the movies nine days ago. She goes to the movies only on Thursday. What day of the week is today ? (A) Thursday (B) Saturday (C) Sunday (D) Tuesday
Direction : (15) A sheet has been folded in the manner as shown in X, Y and Z respectively and punched. You have to choose from the alternatives how it will look when unfolded.
15. X
(A)
Y
Z
(B)
(C)
(D)
SCIENCE 16.
A proton exerts a force on a proton which is : (A) nuclear
17.
(B) electromagnetic
(C) gravitational
(D) all of the above
Force of 50 N is applied to a body of mass 20 kg moving initially with a speed of 15 m/s, then the time taken by the body to stop is : (A) 6 s
18.
(B) 7 s
(C) 8 s
(D) 9 s
A body of mass 20 kg moves with an acceleration of 5m/s2. The rate of change of momentum in SI unit is : (A) 4
(B) 10
(C) 100
(D) 40
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19.
The KE of a body is increased by 300%, the momentum of the body will increased by : (A) 20%
20.
(B) 300%
(C) 100%
(D) 200%
A rectangular iron block is kept over a table with different faces touching the table. In different cases, the block exerts :
21.
(A) same thrust and different pressure
(B) same thrust and same pressure
(C) different thrust and different pressure
(D) different thrust and same pressure
A planet has mass 2 times and radius 3 times as that of the earth. A body weighs 72N on earth. Its weight on this planet will be : (A) 72 N
22.
(C) 36 N
(D) 16 N
The value of buoyant force on a body depends upon : (A) density of body
23.
(B) 144 N
(B) density of fluid
(C) mass of body
(D) all of the above
A body freely falling from rest has a velocity V after it falls through a height h. The distance it has to fall further for its velocity to become double is : (A) 3 h
24.
(C) 8 h
(D) 10 h
When the distance travelled by an object is directly proportional to the time, it is said to travel with : (A) zero velocity
25.
(B) 6 h
(B) constant speed
(C) constant acceleration (D) uniform velocity
The earth attracts the moon with a gravitational force of 1020 N. Then the moon attracts the earth with a gravitational force of : (A) 10-20 N
26.
(C) 1020 N
(D) 1010 N
The unit of quantity on which pitch of the sound depends is : (A) Hertz
27.
(B) 102 N
(B) metre
(C) metre/second
(D) second
A sonar echo takes 4.4s to return from a submarine. If the speed of sound in water is 1500 ms–1, then the distance of submarine from the sonar is : (A) 1500 m
28.
(B) 3000 m
(C) 3300 m
(D) 3600 m
The highest value of e/m of canal rays has been observed when discharged tube is filled with (A) nitrogen
(B) oxygen
(C) hydrogen
(D) helium
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29.
30.
By which of the following method, glycerol can be distilled ? (A) Fractional distillation method.
(B) Simple distillation method.
(C) Steam distillation
(D) Vacuum distillation method.
One mole of electrons have charge equal to (A) one ampere
31.
(B) density
(B) Na+
(B) 4p
(C) 4d
(D) 4f
(C) true solution
(D) None of these
(B) (n + 1)s
(C) nd
(D) (n + 1)p
(B) benzosol
(C) hydrosol
(D) aerosol
(C) O3
(D) (A) & (B) only
Which of the following is a compound ? (B) H2O
Electronic configuration of an element (A) is 1s2, 2s2, 2p6, 3s2, 3p6. The element belongs to (A) nitrogen family
40.
(D) Mg++
If the dispersion medium is water, then the colloids are called -
(A) CO 39.
(D) reactivity
According to (n + ) rule after completing ‘np’ level the electron enters to -
(A) alcohol 38.
(C) melting point
Sugar solution is an example of -
(A) (n – 1)d 37.
(D) 0.529 × 10–12 cm
(C) O – –
(A) suspension solution (B) colloidal solution 36.
(C) 0.529 × 10–6 cm
Which one of the following sub-shell is spherical in shape ? (A) 4s
35.
(B) 0.529 × 10–10 cm
The species having more electrons than neutrons is (A) F
34.
(D) one coulomb
Purity of crystalline oxalic acid can be determined by its (A) colour
33.
(C) one faraday
The value of Bohr’s first radius for hydrogen atom is (A) 0.529 × 10–8 cm
32.
(B) one unit charge
(B) oxygen family
(C) boron family
(D) zero group
(C) adipocytes
(D) amyloplast
Plastids storing fats (oils) are called as (A) elaioplast
(B) phaeoplast
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41.
Enzyme trypsin is secreted by (A) duodenum
42.
(B) liver
(B) thylakoid
45.
(B) pyruvic acid
(C) alcohol
(D) cholesterol
(A) impure blood always
(B) pure blood always
(C) impure blood some time
(D) mixed blood
Flame cell is an excretory organ of (B) Flat worms
(C) Annelida
(D) Arthropoda
(B) ADH
(C) insulin
(D) adrenalin
Female sex hormone is (A) estrogen
47.
(D) outer membrane
Pulmonary vein carries -
(A) Insect 46.
(C) stroma
Muscle cells engaged in vigorous activity due to high concentration of (A) lactic acid
44.
(D) stomach
In chloroplast, chlorophyll is present in the (A) inner membrane
43.
(C) pancreas
A branch of biology which deals with the identification, nomenclature and classification of organisms is called as : (A) Morphology
48.
(B) Ecology
(D) Phytogeography
The first organisms were (B a ) Chemoheterotrophs (C) Autotrophs
(A) Saprotrophs 49.
(C) Taxonomy
(D) Parasites
Gram stain represents (A) a technique for staining bacteria and developed by Gram (B) a stain got from Gram (C) a cytochemical technique for differentiation of mitochondria (D) a trade name
50.
Allele is the (A) alternate form of gene (B) total number of genes for a trait (C) total number of chromosomes of a haploid set (D) total number of genes present on a chromosome
(Space For Rough Work) Ques
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Ans
B
A
A
A
C
D
A
A
A
D
B
B
D
B
C
Ques
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Ans
C
A
C
C
A
D
B
A
B
C
A
C
C
D
C
Ques
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
Ans
A
C
C
A
C
A
C
D
D
C
C
B
A
B
B
Ques
46
47
48
49
50
Ans
A
C
B
A
A
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