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WorksheetsLAT-3_science
Total questions: 20
Worksheet time: 15mins
Under what category of motion does a vibration come in?
Rotatory Motion
Rectilinear Motion
Oscillatory Motion
All of the given options
Why do children have a higher pitched voice than women and men?
Because they have very long vocal folds
Because they do not have vocal folds
Because they have a very small mouth
Because they have short vocal folds
In the given picture, what is A?
A is a rarefaction
A is a compression
It cannot be determined
Which part of the ear is visible?
Pinna
Malleus
Incus
Ear Tube
As per the image, chose the option(s) that correctly arrange the sound waves in a proper order according to their pitch.
3 > 2 > 1
1 > 2 > 3
3 < 2 < 1
1 < 2 < 3
Sounds below 20 Hz are called _____.
Infrasonic sounds
Ultrasonic sounds
a unit used to measure the intensity of a sound
decibel
hertz
megahertz
meters per second
1.A sample of NH3 molecule irrespective of source contains 82.35% Nitrogen and 17.65% of Hydrogen by mass. This data supports:
a) Law of Conservation of Mass
b) Las of Multiple Proportions
c) Law of Definite Proportions
d) Avogadro’s Law
2.An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be:
(a) XY
(b) XY2
(b) XY2
(d) XY4
8.The atomicity of K2Cr2O7 is
a)9
b) 11
c)10
d)10
An atom has 4 protons.
How many electrons does it have if the atom has a -1 charge?
6
5
4
3
WHCH OF THE FOLLOWING IS NOT CORRECTLY MATCHED
1. PHOSPHATE -PO43-
2. NO3- NITRIDE
3. SO42- SULPHATE
4. HYDRIDE - H-
1
4
2
3
The formula of quick lime is
CaCO3
CaCl2
MgO
CaO
Which of the following has maximum number of atoms?
18g of H2O
18g of O2
18g of CO2
18g of CH4
pulses are rich in
proteins
Carbohydrates
oils
vitamins
Which one is an oil yielding plant among the following ?
(a) Lentil
(b) Sunflower
(c) Cauliflower
(d) Hibiscus
To solve the food problem of the country, which among the following is necessary?
(a) Increased production and storage of food grains
(b) Easy access of people to the food grain
(c) People should have money to purchase the grains
(d) All of the above
What is the process of growing two or more crops in a definite pattern?
Crop rotation
Inter-cropping
Mixed cropping
Organic cropping
Root nodules of leguminous Plants contain
Anabaena
Mycorrhiza
Rhizobium
Azolla
