Frequency is the number of __________ per second.
Oscillations
Photosynthesis releases __________ gas.
Oxygen (O2)
A regulator controls __________ speed.
Fan
A cockroach has __________ body parts.
3
Malaria is transmitted by the __________ mosquito.
Female Anopheles
Water is formed from oxygen and __________.
Hydrogen
A generator produces __________ energy.
Electric
The colors of a rainbow in order are __________.
Violet, Indigo, Blue, Green, Yellow, Orange, Red (VIBGYOR)
A common electrical semiconductor is __________.
Silicon
The principle of energy conservation states that energy cannot be __________.
Created or destroyed
The unit of force is __________.
Newton
Rabies is an __________ disease.
Infectious
Lemons are rich in vitamin __________.
C
Beriberi is caused by deficiency of vitamin __________.
B
One horsepower equals __________ watts.
746
The main element in the human body is __________.
Water
Light is a form of __________ radiation.
Electromagnetic
ISRO stands for __________.
Indian Space Research Organisation
Water boils at __________.
100°C
An electric motor converts electrical energy into __________.
Mechanical energy
Humans have __________ chromosomes.
46
The most abundant gas in the sun is __________.
Hydrogen
A common mammal is the __________.
Cow
The bird that lays the largest egg is the __________.
Ostrich
The Doppler effect is observed in __________ waves.
Sound
Carbon allotropes include __________ and __________.
Diamond, Graphite
ECG is used to examine the __________.
Heart
Hemoglobin is located in __________.
Blood
__________ is the primary energy source for cells.
Glucose
A photocell produces __________ output.
Light
__________ gas is commonly used in fire extinguishers.
Carbon dioxide (CO2)
Pencil lead is made of __________.
Graphite
The ideal gas equation is __________.
PV = nRT
The unit of sound is __________.
Decibel
The study of cancer is called __________.
Oncology
X-rays were discovered by __________.
Wilhelm Röntgen
The hardest natural substance is __________.
Diamond
Pure water is __________ in color.
Colorless
The wire in a bulb that produces light is called the __________.
Filament
Ozone gas has a __________ color.
Light blue
The unit of frequency is __________.
Hertz
An isotope has the same number of __________.
Protons
Cow dung produces __________ gas.
Methane
Penicillin was discovered by __________.
Alexander Fleming
Mars is known as the __________ planet.
Red
The inventor of the radio is __________.
Marconi
__________ is a liquid metal at room temperature.
Mercury
Brass is an alloy of __________ and __________.
Zinc, Copper
The ozone layer is destroyed by __________.
CFCs
The chemical formula of carbon monoxide is __________.
CO
Oxygen was discovered by __________.
Joseph Priestley
The CGS unit for density is __________.
Gram per cubic centimeter
A PN junction diode is used for __________.
Rectification
Dialysis is a treatment for __________ failure.
Kidney
1 atomic mass unit (AMU) equals __________ kilograms.
1.66 × 10^-27
The inventor of the telephone was __________.
Alexander Graham Bell
The chemical symbol for ozone is __________.
O3
A CNG compressor compresses __________ gas.
Natural gas
An adult human has __________ teeth.
32
Star twinkling is caused by __________ of light.
Refraction
The nucleus of an atom contains __________ and __________.
Protons, Neutrons
Diamond is an allotrope of __________.
Carbon
A healthy pulse rate ranges from __________ to __________ bpm.
70 to 80
The term for a metric ton is __________.
Tonne
A device used to find directions is a __________.
Compass
A rich source of calcium is __________.
Milk
Pulse measurement records __________ rate.
Heartbeat
Medicines derived from plants are called __________.
Herbs
Steel is composed of __________ and __________.
Iron (Fe), Carbon (C)
The unit of weight in the metric system is __________.
Gram
Carrots are rich in vitamin __________.
A
A barometer measures __________ pressure.
Atmospheric
The green color of leaves is due to __________.
Chlorophyll
The ratio of kinetic energies is __________.
0.172916666666667
The purest form of natural water is __________.
Rainwater
The strongest muscle in the human body is the __________.
Jaw
Surface tension is measured in __________.
Newton/meter
The density of ice __________ when melting.
Increases
Hair, nails, and hoof are made mostly of __________.
Protein
Magnification is the ratio of __________ to __________.
Image size, object size
The neutron was discovered by __________.
Chadwick
The study of snakes is called __________.
Herpetology
TV remotes use __________ technology.
Infrared
The chemical symbol for oxygen is __________.
O
The virus causing swine flu is __________.
H1N1
Sulfur dioxide has a __________ odor.
Pungent
Chemical energy is converted in the __________.
Cell
Insulin deficiency causes the disease called __________.
Diabetes
The atomic number of lithium is __________.
3
Atmospheric pressure is measured in __________.
Pascal
The chemical symbol for mercury is __________.
Hg
Dry ice is solid __________.
CO2
The filament of a light bulb is made of __________.
Tungsten
__________ is a disorder caused by low hemoglobin.
Anaemia
Compounds form by __________ combination.
Chemical
An element with atomic number 21 and neutrons is __________.
Scandium
Hydrogen peroxide is used to treat __________.
Tuberculosis
Gold purity is measured in __________.
Carat
A condenser is used to __________ charge.
Collect
Rusting of iron is called __________.
Oxidation