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10th Science Revision Test-1

St. Britto Hr. Sec. School - Madurai

10th Science Revision Test-1-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

What mass of hydrogen and oxygen will be produced on complete electrolysis of 18 g of water

2 g hydrogen and 32 g oxygen
2 g hydrogen and 16 g oxygen
4 g hydrogen and 32 g oxygen
4 g hydrogen and 14 g oxygen

Lanthanides and Actnides are known as________.

transition elements
alkali metals
inner-transition elements
alkaline earth metals

Modern periodic law arranged the elements in the periodic table on the basis of______.

atomic numbers
mass numbers
atomic mass
number of neutrons

Second group of elements are called________.

nitrogen family
alkaline earth metals
alkali metals
halogen family

Group 16 elements are called_______ .

nitrogen family
chalcogen family
halogen family
noble gases

If there are two bulbs i.e lS0W bulb and 60W bulb so which has more resistance?

60 W
150 W
Both a and b
None of the above

An oocyte is alive for about________ after it is released from the follicle

24hours
12hours
15hours
20 hours

Velocity of sound is directly proportional to ___________

\(\sqrt { d } \)
\(\sqrt { T } \)
\(\sqrt { I } \)
\(\sqrt { \iota } \)

Dogs can receive sound upto _____ kHz.

20
25
10
15

H_2(g) + Cl_29(g) → 2HCl_(g) is a

Decomposition Reaction
Combination Reaction
Single Displacement Reaction
Double Displacement Reaction

The entire nervous system is divided into two main regions: The_________

Brain and the spinal chord
CNS and the PNS
Neurons and the glial cells
Motor neurons and the sensory neurons

The_______ on both sides join to form the genital atrium in leech.

ejaculatory ducts
epididymis
sperm Vesicle
vas efferens

The chemical formula of sodium meta aluminate is ___________

NaAlO₂
Na₂AlO₂
NaAl₂O₂
Na₂Al₂O₃

_________ is the outer most layer.

Stomata
Epidermis
Periderm
Skin

The cell formed after fertisation is called

Foetus
Zygote
Embryo
None of these

Group three to twelve are called_______elements.

inner transition
alkali
alkaline earth
transition

Which one of the following materials cannot be used to make a lens?

Water
Glass
Plastic
Clay

The number of______ increases during allergy.

Basophil
RBC
Eosinophil
Monocyte

Conductivity is the ________ of resistivity.

opposite
reciprocal
equal
none of the above

Ethene is an ___________

alkane
alkene
alkyze
armatic hydrocarbon

Part - B

True or False - Answer All Question

Mostly organic compounds form ionic bonds in nature.

Correct statement: Mostly organic compounds form covalent bonds in nature.

True
False

Momentum is the power of motion of an object.

True
False

Part - C

Generic 2 - Answer All Question

What are the preventive measures of radioactivity?

What are Eris?

What is rDNA?

State radioactive displacement law.

Write the uses of ethanol.
An echo is produced when a sound is reflected from a distant object. The distance between the source and the reflecting surface remains same. Does one hear echo on a warm day?

Why does sound travel faster in solids than in gases?

What is the shape of RBC in human blood?

What are the contributing factors for Obesity?

How the frequency and wavelength of a sound are related to its speed.

Explain the variation of ionsiation energy from left to right of the periodic table.

How far leech is used in medical field?

Some situations in our day to day life require quick response from our body. Illustrate the sentence with the help of common example.

5 g of copper sulphate are dissolved in 100 g of water to form a saturated solution at 298K. Find out the solubility of the solute at the temperature.

In magnesium sulphite, the ratio by mass of Mg and S is 3 : 4. What is the ratio of the number of Mg and S atoms?

What are the hormones secreted by anterior pituitary?

Define blood pressure.

What is absolute alcohol?

Part - D

Generic 5 - Answer All Question

Give the application of torque.

An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the transmission and reception of the wave is 1.6 seconds. What is the depth of the sea, if the velocity of sound in the seawater is 1400 m s^-1?

State and explain Boyle's law.

Write the characteristics of organic compounds.

Explain Reproductive System of Ieech?

Explain ideal gas equations.

Explain the extraction of copper from copper pyrite.

How will you predict the nature of chemical bonds using electronegativity values?
Write a note on vascular tissue system.

Part - E

Assertion and reason - Answer All Question

Assertion : If a pendulum is suspended in a lift and lift is falling freely, then its time period becomes infinite.
Reason : Free falling body has acceleration equal to acceleration due to gravity
(a) Both assertion and reason are true and reason is correct explanation of assertion
(b) Both assertion and reason are true but reason is not the correct explanation of assertion.
(c) Assertion is true but reason is false
(d) Assertion is false but reason is true

Assertion : An uncleaned copper vessel is covered with greenish layer.
Reason : copper is not attacked by alkali
i) A and R are correct, R explains the A.
ii) A is correct, R is wrong.
iii) A is wrong, R is correct.
iv) A and R are correct, R doesn’t explains A.

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