Science Quiz

Science Quiz

Science-Explosion

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Science Quiz

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Question 1
Which type of reaction mixes an acid and base?
A
Neutralization Reactions
B
Addition Reactions
C
Substitution Reactions
D
Elimination Reactions
Question 1 Explanation: 
When an acidic solution is mixed with a basic solution, both the solutions neutralise the effect of each other. When an acid solution and a base solution are mixed in suitable amounts, both the acidic nature of the acid and the basic nature of the base are destroyed.
Question 2
Which is the smallest flightless bird?
A
Kiwi
B
Penguin
C
Ostrich
D
Rhea
Question 2 Explanation: 
Kiwis are pear-shaped, flightless birds with long legs and beak. Though they look to be covered in fur, kiwis actually have thin, hair-like feathers.
Question 3
Which is the vertebrate that has two chambered heart?
A
Crocodile
B
Snake
C
Fish
D
Blue whale
Question 3 Explanation: 
The hearts of fishes are two chambered hearts, they have only one atrium and one ventricle.
Question 4
Which is the largest human cell?
A
Skin
B
Liver
C
Spleen
D
Ovum
Question 4 Explanation: 
The smallest cell is the sperm cell and the largest cell is ovum in the human body.
Question 5
Which animal never drinks water in their entire life?
A
Rat
B
Kangaroo
C
Kangaroo rat
D
bullfrogs
Question 5 Explanation: 
Kangaroo rat is the animal which can live years without drinking water. It is found in the deserts of Mexico and South Western United States. This animal can live up to 5 years without drinking the water and are able to live in one of the driest place in the environment.
Question 6
Which of the following is the "master gland"?
A
Pituitary gland
B
Pancreas
C
Pineal
D
Thymus gland
Question 6 Explanation: 
The pituitary gland is sometimes called the "master" gland of the endocrine system because it controls the functions of many of the other endocrine glands. The pituitary gland is no larger than a pea, and is located at the base of the brain.
Question 7
Saurology is the study of
A
Mosquitoes
B
Snake
C
Lizards
D
Cockroach
Question 7 Explanation: 
Saurology is the study of Lizards.
Question 8
Which is the largest blood vessel in human body?
A
Aorta
B
Alveoli
C
Artery
D
Vein
Question 8 Explanation: 
The aorta is the large artery leaving the heart. The superior vena cava is the large vein that brings blood from the head and arms to the heart, and the inferior vena cava brings blood from the abdomen and legs into the heart.
Question 9
Who had performed the world's first heart transplant?
A
Dr. Karin Setzkorn
B
Dr. Michael DeBakey
C
Dr. Denton Cooley
D
Dr. Christiaan Barnard
Question 9 Explanation: 
Christiaan Barnard performed the world's first human to human heart transplant, placing Groote Schuur Hospital in Cape Town, South Africa, on the international map.
Question 10
How many bones present in human ears?
A
6
B
5
C
4
D
9
Question 10 Explanation: 
3 bones in each ear (Malleus (hammer shaped), Incus(anvil shape), Stapes(horse shoe shaped).
Question 11
Which device is used to measure very low temperature of objects?
A
Pyrometer
B
Cryometer
C
Hygrometer
D
Techometer
Question 11 Explanation: 
A cryometer is a thermometer used to measure very low temperatures of objects and Pyrometer, device for measuring relatively high temperatures, such as are encountered in furnaces.
Question 12
Which of these device directly converts solar energy into electrical energy?
A
Dry cell
B
Denial cell
C
Galvanic cell
D
Photovoltaic cell
Question 12 Explanation: 
A photovoltaic cell, commonly called a solar cell or PV, is the technology used to convert solar energy directly into electrical power.
Question 13
Which fibre is produced from the plants of the genus Gossypium?
A
Mohair
B
Jute
C
Cotton
D
Wool
Question 13 Explanation: 
Cotton, seed-hair fibre of several species of plants of the genus Gossypium, belonging to the hibiscus, or mallow, family (Malvaceae).
Question 14
Which device is used to measure Radioactivity?
A
Calorimeter
B
Gieger Mular Counter
C
Barometer
D
Hygrometer
Question 14 Explanation: 
Geiger Counter, with Geiger-Mueller (GM) Tube or Probe—A GM tube is a gas-filled device that, when a high voltage is applied, creates an electrical pulse when radiation interacts with the wall or gas in the tube. These pulses are converted to a reading on the instrument meter.
Question 15
Which one of the following is the first enzyme to mix with food in digestive tract?
A
Trypsin
B
Cellulose
C
Pepsin
D
Amylase
Question 15 Explanation: 
The digestion of food begins in the mouth by the action of salivary amylase.
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