WorksheetsSEA IX SCIENCE
Total questions: 23
Worksheet time: 17mins
Write your full name in capital letters.
Write your Admission number. (e.g. JS----)
Write your class and section (e.g. IXA)
Dry ice is -
water in solid state
water in gaseous state
CO2 in liquid state
CO2 in solid state
The physical state of water that remains at DC
solid
liquid
both solid and liquid
gas
Which of the following cannot be considered a form of matter?
Atom
Water vapour
Smell
Electron
Which of the following mixtures can be separated by the given process?
Iodine and camphor
Ammonium chloride and common salt
Naphthalene and iodine
Ammonium chloride and camphor
Which of the following statement is correct?
Materials existing as liquids at room temperature have their melting and boiling points lower than that of room temperature.
The phenomenon involving the transition of a substance from solid to liquid state is called sublimation.
To convert a temperature on the Celsius scale to Kelvin scale, subtract 273 from the given temperature
The density of ice is less than that of water.
Which of the following statement is not true regarding the characteristic of matter?
Particles of a matter are randomly moving in all directions.
Kinetic energy of the particles increases with a rise in temperature
Kinetic energy of the particles of all maters remains the same at a particular temperature.
Particles of matter diffuse into each other on their own.
When water at 0°C freezes to form ice at the same temperature of 0°C, then it:
Absorbs some heat
Releases some heat
Neither absorbs nor releases heat
Absorbs exactly 3.34 x 105J/kg of heat
When heat is constantly supplied by a burner to boiling water, then the temperature of water during vaporisation :
Rises very slowly
Rises rapidly until steam is produced
First rises and then becomes constant
Does not rise at all
A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is
Krypton
Water
Steel
Carbon dioxide
Whose temperature is lowest?
1 Kg ice
1Kg melting ice
10Kg ice
Mixture of 1Kg ice and salt
Why are cells stained?
To make the cell turgid.
To nourish the cell.
To help in cell multiplication.
To highlight the parts of a cell .
A human cheek cell stained in methylene blue and mounted in glycerine was observed under a compound microscope. The components of cell which may be seen are:
Cell wall, cytoplasm and nucleus
Plasma membrane and nucleus.
Plasma membrane, cytoplasm and chloroplast
Plasma membrane, nucleus, mitochondria and cytoplasm.
To observe the cells in an onion peel, we should prepare a slide of which part of the onion?
Crushed pulp of onion
Green leaf of onion
Dry scale leaf.
Thin outer layer of a fleshy onion scale.
When we observe onion peel under compound microscope, which of the following structures is not visible to us?
Cell wall
Cytoplasm
Nucleus
Mitochondria
A cell “X” contains a cell wall, large central vacuole and a nucleus at the periphery. The cell “X” is _______.
Plant cell
Animal cell
Bacterial cell
Prokaryotic cell
Name two structures which you would see in cheek cells if you were using a very high magnifying power of microscope?
Cell membrane and cytoplasm
Cytoplasm and cell wall
Nucleus and cytoplasm
nucleus and cell wall
Which lens in compound microscope is closest to eyes, while seeing images?
Eyepiece
Objective
Where is the sample collected when preparing a temporary mount of a human cheek cell?
Outer side of cheek with a blade
Inner side of cheek with a blade
Outer side of cheek with a toothpick
Inner side of cheek with a toothpick.
If there is extra stain on the slide, how is it removed?
Drying stain under sunlight
Evaporation by heating.
Keeping slide under running water.
Soaking with the filter paper.
The colour of Saffranin stain to colour plant tissue is-
Pink
Blue
Orange
Deep red
