Question Discussion & Solution

Concept:

• Heat Transfer: Heat is transferred from one place to another in substance due to temperature difference. 

• Evaporation: In this process, the liquid form a substance tends to convert in the gaseous phase on the uppermost surface due to heat and pressure.
• Condensation: In this process, the gaseous phase of an object tends to convert into liquid form due to pressure and temperature.

Explanation:

The other end of a wooden spoon will not become cold when it is dipped in a cup of ice cream because wood is a bad conductor, not a good conductor.

The correct answer is Rajsamand.

• Kumbhalgarh Wildlife Sanctuary is located in the Rajsamand district.

Key Points

• Kumbhalgarh Wildlife Sanctuary​
  • Surrounding the popular, Kumbhalgarh Fort, Kumbhalgarh Wildlife Sanctuary is situated in Rajsamand District of Rajasthan.
  • The sanctuary spreads in an area of 610.5 sq km covering parts of Rajsamand, Udaipur, and Pali districts.
  • It also covers four hill and mountain ranges of the Aravallis – Kumbhalgarh Range; Sadri Range; Desuri Range and the Bokhada Range. 
  • The wildlife sanctuary in Rajasthan is known for being the home to a variety of animals including some endangered species.
  • The top predator in the sanctuary is the leopard who preys on animals like sambhar, nilgai, chausingha (the four horned antelope), chinkara and Indian hare.

​Additional Information

• About Rajasthan Wildlife
  • ​Rajasthan has Ranthambore National and Sariska National Park and Mukundara as a tiger reserve.
  • The UNESCO World Heritage Site Keoladeo National park along with Tal Chhapar, Van Vihar, and Jorbeed are for bird destinations in the state.
  • The Desert National Park is home to the critically endangered species of Great Indian Bustard.
  • Apart from these, Rajasthan is home to a large number of leopards, blackbuck, great Indian spotted eagle, and marsh crocodiles.

The correct answer is Silicon.

• An integrated circuit, or IC, is a small chip that can function as an amplifier, oscillator, timer, microprocessor, or even computer memory.
• An IC is a small wafer, usually made of silicon, that can hold anywhere from hundreds to millions of transistors, resistors, and capacitors.
• An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material that is normally silicon.

Key Points

• Silicon is a highly pure, easy to use, and cheap semiconductor, perfect for the now huge computer chip industry.
• Silicon is used because it can be used as either an insulator (doesn't allow electricity to flow) or a semiconductor (allows a little flow of electricity).

Important Points

The advantages of ICs :

• Extremely small in size.
• Low power consumption.
• Reliability.
• Reduced cost.
• Very small weight.
• Easy replacement. 

The source of rain is clouds.

Similarly, the source of heat is fire.

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

{(16 × 6) - (2 / 3)} + (3 - 1)] / 2

Now put the right symbol we get-

= [{(16 - 6) + (2 × 3)} / (3 + 1)] × 2

Now we apply BODMAS rule-

= [{10 + 6} / 4] × 2

= [16 / 4] × 2

= 4 × 2

= 8

Hence, "8" is the correct answer.