Question Discussion & Solution

The pattern followed here is:

Similarly,

Hence, ODVKOGHMQ is the correct answer.

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. 

Given: Victory ∶ Encouragement ∶∶ Failure ∶ ?

Logic:

Victory leads to Encouragement.

Similarly,

Failure leads to Frustration.

Hence, frustration is the correct answer.

The correct answer is Select, where, group by, having.

Additional Information

Six Operations to Order: SELECT, FROM, WHERE, GROUP BY, HAVING, and ORDER BY. Because the database executes query components in a specific order,

SELECT select_list [ INTO new_table ]  [ FROM table_source ]

[ WHERE search_condition ]

[ GROUP BY group_by_expression ]

[ HAVING search_condition ]

[ ORDER BY order_expression [ ASC | DESC ] ]

Hence Option 4 is correct

The correct answer is 4°C.

• Freezing of Water:
  • As water freezes, cold water (or ice formed) comes on the surface and warm water goes down.
  • Since the freezing temperature of the water is 0ºC or 273 K.
  • So water at the bottom should be at a higher temperature.
  • Water density at 4ºC is more than the density of water at 0ºC, hence the correct option is 4ºC.

​Key Points

• Reason of low temperature at bottom of the top layer:
  • This is due to the process of convection.
  • When the temperature of the water at the top layer reaches the freezing point, it is converted to ice.
  • But ice is lighter than water, so it will not sink to the bottom.
  • So there will be ice on the top surface and water would remain at the bottom of the lake.