Question Discussion & Solution

The correct answer is Gold.

Key Points

• Gold is the most malleable metal as it can be hammered to a thickness of 0.0025 mm.
• 1 gram of gold can be beaten into a sheet that spreads across an area of 1 m².
• Malleability, as a physical property of metals, is used to describe a given metal’s reaction to compressive forces.
• A metal with low malleability, like tungsten, will shatter when exposed to compression.
• A metal with high malleability, like lead, will deform when compressed.

Below are a few types of Unconditional Control Structures

The “break” Statement

A break statement terminates the execution of the loop and the control is transferred to the statement immediately following the loop. 

Syntax : Jump-statement;  break;

The “continue” Statement

The continue statement is used to bypass the remainder of the current pass through a loop.

 Syntax : Jump-statement;  Continue;

The “goto” Statement

C supports the “goto” statement to branch unconditionally from one point to another in the program.

Syntax :

goto label;
.............
.............
.............
label:
statement;

Return Statement :

The return statement terminates the execution of a function and returns control to the calling function. Execution resumes in the calling function at the point immediately following the call.

 Syntax : Jump-statement: return expression;

 Therefore answer is goto statement i.e, Option 4 

The correct answer is Energy.

• Energy can neither be created nor be destroyed.

Key Points

• First Law of Thermodynamics:
  • It is also known as the Law of Conservation of Energy and states that energy cannot be created or destroyed in an isolated system.
  • Thermodynamics was discovered by Ludwig Boltzmann.
  • Albert Einstein also said that "Energy cannot be created or destroyed. It can only be changed from one form to another."

Additional Information

• Force is that external cause which when acts on a body, changes or tries to change the initial state of the body.
  • Force = mass × acceleration
  • Its S.I. unit is Newton (kg. m s-2)
• Momentum is the property of a moving body and is defined as the product of mass and velocity of the body.
• It is a vector quantity.
  • Its SI unit is kg m/s.
• The rate of doing work is called power.
  • SI unit of power is watt or Joule Per second named as a respect to the scientist James Watt.
  • It is a scalar quantity.

The numbers are "2".

Hence, there are one such numbers.

The correct answer is Parasite.

Key Points

• Cuscuta: 
  • ​It is a stem parasite. Hence, Option 2 is correct.
  • It is also known as Amarbel in India.
  • A parasitic plant is a plant that obtains all or part of its nutrition from another plant (the host) without contributing to the benefit of the host and, in some cases, causing extreme damage to the host.
  • The defining structural feature of a parasitic plant is the haustorium, a specialized organ that penetrates the host and forms a vascular union between the plants.

Additional Information

• Saprophytes are living organisms that live and feed on dead and decaying organisms.
• An autotroph is an organism that can produce its own food using light, water, carbon dioxide, or other chemicals. 
• Host plants are plants that an organism lives on and lives off of.