Question Discussion & 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 correct option is, i.e. Brain.

• Hypothalamus-
  • The Hypothalamus is a part of Brain that plays a crucial role in many important functions of the Human Body.
  • The hypothalamus is located below the thalamus in the brain.
  • The hormones from the hypothalamus govern physiological functions such as temperature regulation, thirst, hunger, sleep, mood, and the release of other hormones within the body.
  • Hypothalamus regulates the pituitary gland.

Option 1 - Arrow - Arrow is used in Archery. An arrow is a projectile with a pointed tip and a long shaft with stabilizer fins (fletching) towards the back, with a narrow notch (nock) at the very end to contact the bowstring.

Option 2 - Duck - In cricket a duck is a batsman's dismissal with a score of zero.

Option 3 - Stump - In cricket, the stumps are the three vertical posts that support the bails and form the wicket.

Option 4 - Pitch - In the game of cricket, the cricket pitch consists of the central strip of the cricket field between the wickets.

All except Arrow is associated with cricket.

The positions of the letters according to the English alphabet series:

The pattern for this code is as follows;

Similarly;

Hence, "HFIZG" is the correct answer.

Shortcut Trick

Shortcut to remember the reverse positional letters.

Least possible diagram is:

I. Some car are Maruti. → True

II. No Ciaz is a Maruti. → False