Question Discussion & Solution

The correct answer is A solid in gas.

Concept:

• A system made up of a substance distributed or scattered as minute particles of solid droplets of a liquid or extremely tiny bubbles of gas into the body of another substance is called a dispersion system.
• A dispersion system is a two-phase system.
• The distributed substance is called the dispersed phase and the continuous medium around it is called the dispersion medium.
• Depending upon the particle size of the dispersed phase, the dispersion system may be classified as 1. True solutions 2. Colloidal solutions 3. Suspensions.

Explanation:

Classification of colloids based on the type of phases:

• The colloidal system is heterogeneous in nature and consists of two phases called the dispersion medium and the dispersed phase.
• The component that is present in a small amount and behaves like a solute is called the dispersed phase and the component present in excess is called dispersion medium.
• Depending on the nature of dispersed phase and dispersion medium, colloids can be classified as:

• From the above table, it is clear that smoke contains solid particles suspended in the gaseous phase.
• Hence, smoke is a dispersion of solid in gas.

Important Points

• Gas in the gas phase is true solution. 

The correct answer is Indicator.

Key Points

• Indicators are substances that show a change in colour when brought in contact with acids and bases.
• The most common indicator used in the laboratory is Litmus.
• Litmus is extracted from lichens.

Additional Information

• A promoter is a sequence of DNA needed to turn a gene on or off.
• A neutralizer is a substance used in the neutralization of acidic water.
• Neutralization is a chemical reaction in which acid and a base react quantitatively with each other to form water and salt.
• A catalyst is a substance that speeds up the rate of a chemical reaction but is not consumed during the reaction.

The pattern used here is,

Code for ‘Raj’ is either ‘da’ or ‘di’.

Code for ‘is’ is ‘na’

Code for ‘going’ is either ‘za’ or ‘ta’                              

Code for ‘to’ is either ‘za’ or ‘ta’

Code for ‘bed’ is either ‘da’ or ‘di’

Hence, code for ‘bed’ is either ‘da’ or ‘di’.

The correct answer is Penalty for sexual harassment and breach of a woman's dignity.

• The main issue of Section 354 of the Penal Code highlights the Penalty for sexual harassment and breach of a woman's dignity.

Key Points

• Section 354 of the Indian Penal Code:
  • It states that whoever assaults or uses criminal force to any woman, intending to outrage or knowing it to be likely that he will thereby outrage her modesty, shall be punished with impris­onment of either description for a term which may extend to two years, or with fine, or with both.

Additional Information

• Section 326B of the Indian Penal Code deals with Penalty for throwing acid or attempting to throw.
• Section 498A  of the Indian Penal Code deals with Penalty for dowry harassment and Penalty for domestic violence.

Explanation:

BOSS (BHARAT OPERATING SYSTEM SOLUTIONS)

• National Resource Centre for Free/Open Source Software (NRCFOSS) of India developed a free and Open Source operating system called Bharat Operating System Solutions (BOSS).
• The latest variant of BOSS called GNU/Linux or simply BOSS Linux Version 5.0 is developed by C-DAC (Centre for Development of Advanced Computing).
• Linux Foundation has certified BOSS GNU/Linux for compliance with the Linux Standard Base standard.
• EduBOSS, another variant of BOSS GNU Did you know Linux, has educational applications for school students.
• The latest PC version learning packages that contain education of BOSS GNU/Linux is games, paint and graphic tools, typing tutor, available in eighteen and many other such tools.
• It also contains Indian languages. teaching tools for subjects like Math, Science, Social Studies among others.
• Another main component is the e-learning editor that enables teachers to develop and publish web-based learning and teaching materials and design online quizzes, tests, and self-evaluation procedures.

Important Points

•  The latest PC version of BOSS GNU/Linux is available in 18 Indian languages.