Question Discussion & Solution

The Correct Answer is Option 4 i.e Propane.

• Methane:
  • Methane is a colorless odorless gas. 
  • It is also known as marsh gas or methyl hydride. 
  • The molecular formula is CH₄.
• Pentane:
  • Pentane is found in alcoholic beverages. 
  • Pentane is present in hop oil. 
  • Pentane is any or one of the organic compounds with the formula C₅H₁₂. 
  • Its properties are very similar to those of butane and hexane.
• Propane:
  • Propane, sometimes known as liquefied petroleum gas, or LPG.
  • Propane is a three-carbon alkane gas (C₃H₈).
  • Propane is produced as a by-product of natural gas processing and crude oil refining. 
• Butane:
  • Butane is a colorless gas with a faint petroleum-like odor.
  • It is shipped as a liquefied gas under its vapor pressure. 
  • Butane is a straight-chain alkane composed of 4 carbon atoms. 
  • C₄H₁₀ is the molecular formula of butane.

CONCEPT:

• Electric Power: The rate at which electrical energy is dissipated into other forms of energy is called electrical power i.e.,

\(P = \frac{W}{t} = VI = {I^2}R = \frac{{{V^2}}}{R}\)

Where V = Potential difference, R = Resistance and I = current.

EXPLANATION:

• Mathematically power can be written as,

\(\Rightarrow P = \frac{W}{t} = VI \)

If, W = 1 J and t = 1 sec, then P = 1 watt

• Thus the power of an electric circuit is said to be one watt or 1 ampere - volt if one joule of energy is consumed in one second. Therefore option 1 is correct.

The correct answer is Rajasthan Panchayati Raj (Modification of provisions in their application to the Scheduled Area) Act, 2011.

Key Points

• Rajasthan Panchayati Raj (Modification of provisions in their application to the Scheduled Area) Act, 2011 has the provision of Joint Meeting Of Gram Sabha.

Additional Information 

• Joint meetings of Gram Sabhas-
  • Every Gram Sabha is competent to execute its functions in its jurisdiction, but in matters like management of resources, construction of roads, etc. in which co-ordination with other Gram Sabhas is required, a joint meeting of all Gram Sabhas falling under the jurisdiction of the Gram panchayat can be conducted.
  • The joint meeting of Gram Sabhas shall be conducted as per the rules of Gram Sabha as if all the Gram Sabhas were a single entity.
  • The joint meeting shall be chaired by the Sarpanch.
  • In the joint meeting, attendance of a minimum of 5% members or 10 members from each Gram Sabha, whichever is less, shall be mandatory. In case there is no quorum, the date of the next meeting shall be finalized on the same day and the same shall be informed to all Gram Sabhas.
  • The decision-making process shall be the same as in the case of a single Gram Sabha meeting. 

If '+' means 'divide by', '-' means 'add to', '×' means 'subtract from' and '/' means 'multiply by',

[{(20 × 6) × (7 / 2)} + (3 - 2)] / 5

We put the right symbol given is the question-

= [{(20 - 6) - (7 × 2)} / (3 + 2)] × 5

Now apply BODMAS rule

= [{14 - 14} / 5] × 5

= [0 / 5] × 5

= 0

Hence, "0" is the correct answer.

The correct answer is EEPROM.

Key Points

• Flash memory is a non-volatile computer storage chip,
• It is made up of EEPROM.
• EEPROM is the acronym of electrically erasable programmable read-only memory,
• EEPROM is a Programmable ROM that can be erased and reprogrammed using an electrical charge.
• It was first was developed by George Perlegos.
• It allows the user to update the computer BIOS without having to open the computer or remove any chips.
• It organized as arrays of floating-gate transistors.
• USB flash drive, Memory cards are the examples of flash memory storage.
• BIOS is stored in Flash memory chip.

Additional Information

• RDRAM is the acronym of Rambus Dynamic Random Access Memory.
  • It is a video RAM.
• MROM is the acronym of Mask ROM.
  • It is produced by arranging transistors before the semiconductor manufacturing process actually begins.
• SRAM is the acronym of Static random-access memory
  • It uses latching circuitry (flip-flop) to store each bit.
• PROM is the acronym of Programmable Read-Only Memory.
  • It can be modified only once by a user.