Question Discussion & Solution

All except 'Handle' are name of vehicles while 'handle' is the name of one of the parts of a vehicle.

The correct answer is chemical energy.

Key Points

• The dry cell is a type of electric battery which is used for portable electrical devices.
• Electricity is produced through the dry cells from electrochemical energy. Hence, Option 1 is correct.
• A common dry cell is a zinc-carbon cell.
• The electrolyte is immobilized as a paste by a dry cell, with just enough humidity in it to allow current to flow.
• Like a wet cell, a dry cell can work without spilling in any direction, because there is no free liquid in it.
• The versatility makes it ideal for mobile devices.
• The first wet-cell batteries, in comparison, were usually fragile glass containers featuring lead rods sticking from an open-top.
• Hence, they required careful handling to prevent spillage.
• The dry-cell battery development made a significant advance in battery safety and portability.
• Batteries render electricity from chemical energy.
• Batteries consist of one or more different parts, or cells, which contain an electrolyte called a chemical.
• Every cell has two electrodes that are electrically conductive immersed in its electrolyte.
• The electrodes consist of different materials; one releases electrons into the electrolyte, and the other absorbs them.
• Once an electrical system is attached to the electrodes, an electrical current passes through it and supports its operation with electric power.
• The energy contained in the dry cell is therefore in the form of chemical energy.

Additional Information

• Thermal energy
  • It is also called heat energy 
  • It is produced when a rise in temperature causes atoms and molecules to move faster and collide with each other.
  • The energy that comes from the temperature of the heated substance is called thermal energy.
  • Thermal energy is energy that comes from a substance whose molecules and atoms are vibrating faster due to a temperature rise.
• In physical sciences, mechanical energy
  • It is the sum of potential energy and kinetic energy.
  • It is the macroscopic energy associated with a system.
  • The principle of conservation of mechanical energy states that if an isolated system is subject only to conservative forces, then the mechanical energy is constant.
• Nuclear power
  • It is the use of nuclear reactions to produce electricity.
  • Nuclear power can be obtained from nuclear fission, nuclear decay, and nuclear fusion reactions.
  • Presently, the vast majority of electricity from nuclear power is produced by nuclear fission of uranium and plutonium in nuclear power plants.

The longest Highway in the state is NH 15 of length 878.3 km and Smallest is 71B of length 5 km.

• The highway starting from the junction of NH- 71 near Rewari in the state of Haryana of 69 km and connecting Dharuhera and passing through Rajasthan of 5 km and connecting Taoru -Sohna and terminating at its junction with NH 2 near Palwal.
• NH 79 A - Kishangarh- Nashirabad - 35 km
• NH 11 C - Old alignment of NH no. 8 passing through Jaipur. Length in Rajasthan 53 km
• NH 3 - Agra-Gwalior-Shivpuri-Indore-Dhule-Nasik-Thane-Mumbai. Length in Rajasthan 32 km

The correct answer is from gypsum.

Key Points

• Plaster of Paris is manufactured by heating gypsum at 423K or 150°C/300° F.
• On heating gypsum at 423 K, it loses water molecules and becomes calcium sulfate hemihydrate.
• This product is known as the plaster of Paris.

Additional Information 

• Characteristics of Gypsum Plaster:
  • Plaster of Paris is usually a white dry plaster powder.
  • It can be effectively worked with metal apparatuses or even abrasive sheets and can be shaped as per the requirements.
  • The strength of plaster of Paris is not as strong as other compounds and it often requires external support when a large amount is used.
  • It is often applied in the form of a quick-setting paste with water. 

Ocean is the mass of water.

Similarly,

Desert is the mass of sand.