Question Discussion & Solution

Concept:

Latent heat: It is the amount of heat needed to change the state of a unit mass of any substance without changing its temperature.

i.e., we can say that heat needed to supply for changing its state will be directly proportional to the mass m of the substance.

∴Q ∝ m

i.e.,Q = mL

The SI unit of Latent heat is J/Kg and the CGS unit is Cal/g respectively.

Where,

m = mass of an object

L = Latent heat

Q = amount of heat needed to change the state of matter of mass m 

Explanation:

From the above explanation, we can see that Amount of heat needed to melt a unit mass of a substance is directly proportional to the amount of mass of an object since the Latent heat of a material is constant.

i.e., Q ∝ m ⇒ Q = mL

Thus the unit of latent heat can be expressed as \(L=\frac{Q}{m}\Rightarrow L=\frac{Joules}{kg}\)

The correct answer is Article 44.

• Article 44 of the Constitution of India is related to the Uniform Civil Code for the citizens.

Key Points

• Directive Principles of State Policy (DPSP):
  • The Directive Principles of State Policy are described in Articles 36 to 51 in Part IV of the Constitution.
  • They embody the concept of a welfare state.
  • DPSPs are fundamental in the governance of the country.
  • DPSPs are non-equitable.
  • They apply to the Union and State Governments and all other authorities falling within the definition of 'State'.
  • This is a feature borrowed from the Constitution of Ireland.
  • Article 44: To secure a uniform civil code for all citizens throughout the country.

Additional Information

• Article 42: To make provision for just and humane conditions for work and maternity relief.
• Article 45: To provide early childhood care and education for all children until they complete the age of six years.
• Article 40: To organize village Panchayat of function as units of self-government.

In this figure (i) shows that it moves 90 degree clockwise then get figure (ii). Similarly, In figure (iii) moves 90 degree clockwise then get next figure which is shown bellow -

Hence, option 2 is the correct answer.

The correct answer is Software program.

• An operating system is system software that manages computer hardware, software resources, and provides common services for computer programs. Operating systems are found on many devices such as a computer, mobile phones, video games etc.
• Software program
  • It is a set of instructions, or a set of modules or procedures, through which computer operation is performed.
  • It is often called a software application and a software product.

Additional Information

• Computer system
  • A Computer system is usually defined as a combination of both hardware and software working together.
  • Hardware is the physical components of a computer and software is the programs that run on a computer.
• Network
  • It is a collection of computers, servers, mainframes, network devices, peripherals, or other devices connected to one another to allow the sharing of data.
  • E.g - The Internet, often referred to as the ‘Net’, consists of a complex network of computers connected by high-speed communication technologies like satellites, microwave devices, etc.
• Hardware device
  • Computer hardware includes the physical parts of a computer, such as a case, central processing unit (CPU), monitor, mouse, keyboard, computer data storage, graphics card, sound card, speakers and motherboard.
  • It accepts the data (input) from the user.
  • The computer has memory chips, which are designed to hold data until it is needed.
  • It processes this data into information. The computer has an electronic brain called the Central Processing Unit, which is responsible for processing all data into information according to the instructions given to the computer.
  • It then returns the processed information (output) to the user.

Concept:

• Plants have different types of roots.
• Some store food, some breathe some hang from the branches.

Explanation:

• Roots are the underground structures that help in the absorption of water and minerals provide a proper anchorage to the plant parts, storage of reserve food material (Carrot, Radish), and synthesis of PGR (plant growth regulators).
• Sometimes roots get modified to perform different functions like storage of food, respiration, climbing, etc.
• These types of roots are called modified roots.
• Examples - prop root of the Banyan tree for providing support, Pneumatophores of Rhizophora, and Mangrove plants for respiration.

So, these statements are correct.

• To give support to the plant.
• To store food.
• To absorb water and minerals.

Thus, roots do not function to provide humus.