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Thermodynamics Chemistry NEET Questions. We covered all the Thermodynamics Chemistry NEET Questions in this post for free so that you can practice well for the exam.
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Thermodynamics Chemistry NEET Questions for Students
Which one of the following changes occurs when salt is added to the water?
(A) The boiling point is increased and the freezing point is decreased
(B) Boiling point is decreased and the freezing point is increased
(C) Both boiling point and freezing point are decreased
(D) Both boiling point and freezing point are increased
Option a – The boiling point is increased and the freezing point is decreased
On adding common salt to the water, the boiling point and freezing point of the water will
(A) Increase
(B) Decrease
(C) Decrease and increase respectively
(D) Increase and decrease respectively
Option d – Increase and decrease respectively
To keep drinks at the same temperature for quite some time, the walls of the thermos bottle are coated with
(A) Aluminium Paint
(B) Lead Powder
(C) Silver Layer
(D) Mercury Layer
Option c – Silver Layer
It is more comfortable to wear white cloth in summer because
(A) They reflect all the heat falling on them
(B) They radiate heat transferred from the body
(C) They absorb perspiration
(D) They are soothing to the eye
Option a – They reflect all the heat falling on them
The most important function of perspiration is to
(A) Regulate body temperature
(B) Regulate body water supply
(C) Get rid of body poison
(D) Keep the skin pores clear of dirt
Option a – Regulate body temperature
Lightning can even burn a tree because it contains a tremendous amount of
(B) Electric energy
(C) Chemical energy
(D) Nuclear energy
Option b – Electric energy
Cooling is done by
(A) the Flow of water
(B) the Release of compressed gas
(C) Cooking gas
(D) Melting the solid
Option b – the Release of compressed gas
In which of the following conditions wet clothes will dry earliest?
(A) 100% RH, 60°C temperature
(B) 100% RH, 20°C temperature
(C) 20% RH, 20°C temperature
(D) 20% RH, 60°C temperature
Option d – 20% RH, 60°C temperature
A smuggler could not carry gold by depositing iron on the gold surface because:
(a) Gold has a lower standard reduction potential than iron.
(b) Gold has a higher standard reduction potential than iron.
(c) Iron rusts.
(d) Gold is denser.
Option b – Gold has a higher standard reduction potential than iron
Corrosion is basically an:
(a) Interaction
(b) Union between two light metals and a heavy metal.
(c) Altered reaction in the presence of H₂O.
(d) Electrochemical phenomenon.
Option d – Electrochemical phenomenon
To protect iron against corrosion, the durable metal plating on it is:
(a) Tin plating
(b) Copper plating
(c) Zinc plating
(d) Nickel plating
Option c – Zinc plating
Galvanized iron sheets are protected from rusting due to the presence of a layer of:
(a) Lead
(b) Chromium
(c) Zinc
(d) Tin
Option c – Zinc
Silverware turns black after a period of time due to the formation of:
(a) Nitrate coating on silver.
(b) Sulphide coating on silver.
(c) Chloride coating on silver.
(d) Oxide coating on silver.
Option b – Sulphide coating on silver
On exposure to moist air, copper gains a green coat on its surface due to the formation of which one of the following compounds?
(a) Copper carbonate
(b) Copper oxide
(c) Copper sulfate
(d) Copper nitrate
Option a – Copper carbonate
Aluminium surfaces are often ‘anodized’. This means the deposition of a layer of:
(a) Chromium oxide
(b) Aluminium oxide
(c) Nickel oxide
(d) Zinc oxide
Option b – Aluminium oxide
On the basis of position in the electrochemical series, the metal that does not displace hydrogen from water and acid is:
(a) Al
(b) Pb
(c) Ba
(d) Hg
Option d – Hg
Which one among the following metals is prominently used in mobile phone batteries?
(a) Copper
(b) Zinc
(c) Nickel
(d) Lithium
Option d – Lithium
Food cans are coated with tin but not with zinc because:
(a) Zinc is costlier than tin.
(b) Zinc has a higher melting point than tin.
(c) Zinc is more reactive than tin.
(d) Tin is more reactive than zinc.
Option c – Zinc is more reactive than tin
The life span of a Daniell cell may be increased by:
(a) Larger Zn electrode
(b) Larger Cu electrode
(c) Lowering the temperature
(d) Lowering the concentrations
Option a – Larger Zn electrode
Which one of the following pairs of materials serves as electrodes in rechargeable batteries commonly used in devices such as torchlights, electric shavers, etc.?
(a) Nickel and cadmium
(b) Zinc and Carbon
(c) Lead peroxide and lead
(d) Iron and cadmium
Option a – Nickel and cadmium
When an acid cell is charged, then:
(a) Voltage of the cell increases.
(b) Resistance of the cell increases.
(c) The electrolyte of the cell dilutes.
(d) None of the above
Option a – Voltage of the cell increases
The electrochemical cell stops working after some time because:
(a) The electrode potential of both electrodes becomes zero.
(b) One of the electrodes completely vanishes.
(c) The electrode potential of both electrodes equalizes.
(d) The reaction reverses its direction.
Option c – The electrode potential of both electrodes equalizes
A conductivity cell is platinized:
(a) To prolong its service.
(b) To avoid temperature effect.
(c) To avoid polarization effect.
(d) None of the above
Option c – To avoid polarization effect
What is the use of a thermostat?
(A) To measure the temperature
(B) To increase the temperature
(C) To maintain the temperature
(D) To convert heat into electricity
Option c – To maintain the temperature
The thermostat is related to
(A) Humidity
(B) Temperature
(C) Air
(D) Clouds
Option b – Temperature
The thermostat is a device that
(A) Measures heat
(B) Measures temperature
(C) Automatically regulates the temperature of a system
(D) Automatically regulates the pressure of a system
Option c – Automatically regulates the temperature of a system
A thermostat…… is a means of Keeping Stable.
(A) Current
(B) Temperature
(C) Pressure
(D) Heat Radiation
Option b – Temperature
What is the function of the thermostat of a refrigerator?
(A) To lower the temperature
(B) To increase the freezing point
(C) To maintain a constant temperature
(D) To decrease the melting point
Option c – To maintain a constant temperature
Which one of the following is used as an antifreeze for automobile engines?
(A) Ethanol
(B) Ethylene glycol
(C) Methanol
(D) Propyl alcohol
Option b – Ethylene glycol
What is absolute zero temperature?
(A) The starting point of any temperature scale
(B) Theoretically the lowest possible temperature
(C) The temperature at which the vapor of any liquid substance is condensed
(D) The temperature at which all materials are in vapor form
Option b – Theoretically the lowest possible temperature
Expansion during heating
(A) Occurs only in solids
(B) Increases the weight of the material
(C) Decreases the density of the material
(D) Occurs at the same rate for all liquids and solids
Option c – Decreases the density of the material
Transfer of heat by convection can take place in
(A) Solids and liquids
(B) Solids and vacuum
(C) Gases and liquids
(D) Vacuum and gases
Option c – Gases and liquids
When ice melts, then
(A) Volume increases
(B) Volume decreases
(C) Mass increases
(D) Mass decreases
Option b – Volume decreases
We covered all the thermodynamics chemistry neet questions above in this post for free so that you can practice well for the exam.
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