General Science: Biology, Chemistry, and Physics Review
A comprehensive quiz covering endocrine system biology, carbon chemistry, and electrolysis concepts for middle school science review
Questions
What is hormone?
- Organic complex substances
- chemical messenger
- glandular secretion
- blood cells
Which of the following system exhibits body co-ordination?
- blood vascular system
- nervous system
- brain
- nervous and endocrine system
Which of the following flows directly into blood?
- enzyme
- hormone
- minerals
- proteins
Which of the following is not a gland?
- pancreas
- adrenal
- pituitary
- kidney
Endocrine glands
- do not possess ducts
- Sometimes have ducts
- always have duct
- Pour their secretion through ducts.
Which hormone regulates the process of spermatogenesis and sperm formation?
- follicle stimulating hormone
- growth hormone
- thyroxine hormone
- glucagon
Pituitary gland is found in
- pancreas
- brain
- gonads
- trachea
Which hormone controls secretion of oestrogen?
- progesterone
- follicle stimulating hormone
- aldosterone
- adrenaline
Which of the following disease result by endocrine disorder?
- typhoid
- jaundice
- goiter
- pneumonia
Which hormones regulate the growth of metamorphosis in frog?
- adrenalin
- insulin
- thyroxin
- cortisol
Select the one that is not derived from fossil fuel.
- LPG
- Kerosene
- Diesel
- biogas
Water is used to extinguish fire because water
- raises the ignition temperature of the burning substance
- lowers the ignition temperature of the burning substance
- cools the burning substance to a temperature below its ignitions temperature
- conducts the heat
An element exists in different allotropic forms because of
- different arrangement of atoms
- different amounts of energy associated in the formation of each allotropic form
- different methods of formation
- all the above are correct
Which of the following allotropes of carbon is used for manufacture of fullerenes?
- Graphite
- Diamond
- coke
- charcoal
We cannot use graphite as a lubricant in space because
- there is no atmosphere in space and so graphite sublimes in space
- there is no atmosphere in space and so there is no adsorbed air and water between layers of graphite
- absence of external pressure transforms crystalline graphite to amorphous graphite
- none of the above is correct
It is advised that we should not light a candle in a closed room with people, because
- the carbon dioxide formed by burning candle causes breathlessness
- carbon particles that are formed due to burning of candle are dangerous for respiratory tract
- methane gas, which is poisonous in nature, is formed when a candle burns.
- carbon monoxide gas, which reduces the ability of blood to carry oxygen, is formed when a candle burns.
Why do black shoe polishes have an oily feels?
- it is a mixture of oil and powdered graphite
- when exposed to air it undergoes a chemical change and produces oily substance
- vapour of some amount of oil is left over after its preparation
- these are formed by dissolving charcoal in oil
Activated charcoal is used in gas masks because
- it is a good adsorbent
- it is a good reducing agent
- it burns without smoke
- it is highly active
Black diamonds are called
- carnado
- carbonado
- carbond
- Arnold
Which of the following is obtained when diamond is heated to 1500oC, in the absence of air?
- graphite
- carbon black
- fullerene
- none of these
In the process of electrolysis of water :-
- hydrogen gas collects at anode
- oxygen gas collects at cathode
- oxygen gas collects at anode
- no gases are collected at either electrodes
Electrolysis is _____ effect of electric current :-
- magnetic
- chemical
- heating
- physical
Iron is electroplated with _____ to protect is from corrosion :-
- tin
- copper
- silver
- chromium
The person who had shown that if electrodes were immersed in water, and a current was passed, bubbles of oxygen and hydrogen were produced:-
- Nicholson
- Sir Humphrey Davy
- Faraday
- Galvani
A non metal that conducts electricity is :-
- graphite
- diamond
- sulphur
- nitrogen
During electrolysis of water, hydrogen gas collects at :-
- cathode
- anode
- diode
- both electrodes
A good conductor of electricity will be :-
- distilled water + common salt
- distilled water + vegetable juice
- distilled water + fruit juice
- all the above
The container which carries electrolyte along with electrodes is called :-
- electrometer
- electrolyter
- voltameter
- ammeter
A charged atom is called as :-
- ion
- element
- compound
- complex
Plastic coating on wires is a :-
- conducting material
- electroplating material
- insulating material
- atomic nucleus material