Question Discussion & Solution

+ = → is an assignment operator

y+ = y+3

y = y + (y + 3)

y = 9 + (9 + 3)

y = 21

Note:

Total number of boxes of matchsticks = 3600

Total number of cartons = 10

Let the number of packets in one carton be x.

⇒ Number of packets in 10 cartons = 10x.

Number of boxes of matchstick in a packet = 30

⇒ Number of boxes of matchstick in 10x packets = 30(10x) = 300x

So, we have:

Total number of boxes = Number of boxes of matchstick in 10x packets

⇒ 300x = 3600

⇒ x = 12

The correct answer is Leaves.

​

Food is stored in the leaves. Onion as a whole is a modified stem

Key Points

• Different parts of plants like roots, shoots, leaves, flowers, fruits, etc perform the function of storage of food 
• The fleshy leaves of onion are its consumable part.
• As a whole, the onion is a bulb, which is a short modified form of a stem that is surrounded by these fleshy leaves that store food for the onion shoots.

Important Points

• The stored food in onion leaves is Sugar.

Additional Information

• In plants like carrot, reddish, beetroot, sweet potato, turnip, etc. roots perform the function of food storage.
• Some plants store their food in the form of fruit. Ex- apple, guava, grapes mango, etc.
• Plants like potato, ginger, garlic, sugarcane, etc. store their food in stems.​

The given group is all the Forms of energy. Leaping frog is mechanical energy, melting ice cream is thermal energy, and Radio wave is a type of Electromagnetic energy.

Out of the given alternatives lightning is a type of electrical energy.

The correct answer is In 2008.

• In 2008 Pratapgarh was declared the 33rd district of Rajasthan.

Key Points

• Pratapgarh district  
  • Pratapgarh district is the 33rd district of Rajasthan, created on 26 January 2008.
  • It is a part of the Udaipur Division.
  • It has been carved out from the erstwhile tehsils of Chittorgarh, Udaipur, and Banswara districts.

​Additional Information

• Geography of Pratapgarh district
  • ​It is situated at the junction of the Aravali mountain ranges and the Malwa Plateau.
  • The soil is mainly highly fertile Black Cotton Soil made of magma of volcanos.
  • The major rivers of the district are Jakham, Mahi, and Siwana or shiv.
  • Other seasonal rivers are Som, Era, and Karmoi.