RBSE Class 10 Science Paper 2023:- Science paper was held on 29th march 2023. Read complete post to view and download rbse class 10 Science paper 2023. Download the complete paper in PDF from given below.
SECTION- A
Q-1) write the answer of following MCQ in the given answer book:-
i) Example of hormone which inhibits growth is :-
A) Gibberelin
B) cytokinin
C) Abscisic acid
D)Insulin
correct option
ii) Which part of brain is responsible for manitaining the posture and balance of body?
A) Cerebrum
B) Fore-brain
C) Cerebellum
D) Mid-brin
correct option
ii)External feature of genotype RrYy will be-
A) Round, Grean
B) Wrinkled, Yellow
C) Round, Yellow
D) Wrinkled, Grean
correct option
iv) Example of renewable source of energy is –
A) Wind energy
B) Petrol
C) Coal
D) Wood
correct option
v) The old concept of water harvesting in Rajasthan is –
A) Khadin
B) Bundhis
C) Bandharas
D) Kulh
correct option
vi) In the given figure, the value of angle(x) will be-
A) 60
B) 90
C) 45
D) 30
correct option
vii) The muscles of the iris controls –
A) Optic nerves
B) Size of pupil
C) focal lenth
D) shape of lens
correct option
viii) which physical quantity has Kwa as its unit
A) power
B) electric enrgy
C) momentum
D) force
correct option
ix) Identify the device(y) in the given electric circuit related to ohm’s law
A) voltmeter
B) key
C) electric cell
D) ammeter
correct option
x)The process of black coating on silver in environment is –
A) reduction
B) corrosion
C) rancidity
D) double displacement
correct option
xi) The correct ascending order of reactivity of Al, Fe and Zn is
A) Fe < Zn < Al
B) Fe < Al < Zn
C) Al < Fe < Zn
D) Al < Zn < Fe
correct option
xii) CH3COOH + CH3CH2O → [A] + H2O. Compound {A] in above equation is –
A)
B)
C)
D)
correct option
Q-2) Fill in the blancks-
i) The saliva contain an enzyme called salivary __________________.
ii) Advantage of vegetative propagation ois that all plant produced by this are genetically____ to the parent plant.
ii) Substances that are decomposed by biological processs are called_.
iv) Like poles of magnet _ with each other.
v) Chemical name of acid present in vinegar is _.
vi) Number of elements present in third period of modern periodic table are ________.
Q.3)Very Short Anwer Type Question:-
i) Which mechanism regulate the action of a hormone?
ii) Write name of an organism that exhibits multiple fission.
iii) Write one disadvantage of using fossil fuels.
iv) Give one example of abiotic component of ecosystem.
v) Write the corresponding values of two physical quantities P and Q for which the length of conductor P = 5 Ω and Q= 8 x 10-4 Ωm are reduced to half.
vi) Why two magnetic field lines do not intersect to each other?
vii) Draw diagram to show lines of magnetic field inside and around a current carrying solenoid.
viii) Define neutralisation reaction.
ix) Write modern periodic law.
x) CuO + H2 → Cu + H2O. Write the name of reactant reduced in above reaction.
xi) Write name of hardest sustance among iodine, diamond and sodium.
xii) Draw electron dot strucure of methane.
SECTION – B
Short Answer Type Questions:-
Q.4) Define life processes.
Q.5) Define unisexual flower and write two example of it.
Q.6) Draw a labelled diagram of the germination of pollengrains on the stigma.
Q.7) Explain the flow of enrgy between various components of the environment.
Q.8) -i) Define magnification of lens.
ii) Write name of spherical mirror used as rear view mirror in vehicles.
Q.9)-i) Define electric potential difference.
ii) Write name of any two devices based on Joule’s law of heating.
Q.10) Derive the formula for the combination of three resistors connected in series.
Q.11) Why are the household electric circuits, the electric appliances( istruments) connected in parallel combination?
Q.12) – i) Write Fleming’s left hand rule.
ii) Define electromagnetic induction.
Q.13) Define roastin and calcination.
Q.
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