Question Discussion & Solution

The correct answer is one party to another party to marriage or parents of one party to another party to the marriage.

Key Points

Dowry System:

• Dowry, or the custom of accepting gifts by the bridegroom’s parents from to bride’s parents as part of a marriage settlement.
• Dowry is the money, valuables, goods, estate or property which the bride party gives to the groom's party in exchange for marriage.
• The Dowry system is most prevalent in village areas where people are uneducated and a girl is considered as a burden on their family.
• With upcoming times, this practice is not that common in urban areas.
• To prevent the system of dowry, The Dowry Prohibition Act, 1961 was enacted.
• Section 2 of the Prohibition of Dowry Act defines dowry as any property or valuable security given or agreed to be given either directly or indirectly.
• Dowry is given by one party to a marriage to the other party to the marriage or by the parents of either party to a marriage or by any other person, to either party to the marriage or to any other person.

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. 

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 pattern obtained when the transparent sheet is folded is,

Hence, option 4 is the correct answer.

The pattern followed here is:

Hence, “XRW” is the correct answer.