Question Discussion & Solution

Concept-

• The stem is the ascending part of the axis bearing branches, leaves, flowers, and fruits.
• It develops from the plumule of the embryo of a germinating seed.
• The stem bears nodes and internodes. 
• The main function of the stem is spreading out branches bearing leaves, flowers, and fruits.
• It conducts water, minerals, and photosynthates. 

Explanation-

• Some stems perform the function of storage of food, support, protection, and of vegetative propagation. 
• The stem may not always be typically like what they are expected to be.
• They are modified to perform different functions.
• Underground stems of potato, ginger, turmeric, zaminkand, Colocasia are modified to store food in them.

Therefore turnip is not the stem.

Additional InformationTurnip

• Roots in some plants change their shape and structure and become modified to perform functions other than absorption and conduction of water and minerals.
• They are modified for support, storage of food, and respiration.
• Taproots of carrot, turnip, and adventitious roots of sweet potato, get swollen and store food.

The correct answer is Ajmer.

Key Points

• The first cotton mill was established in Ajmer.

Additional Information

• Cotton cloth is one of the most developed industries in India.
• It is an important and ancient industry.
• In Rajasthan, the first textile mill-Krishna Mills Beawar in Ajmer- was set up in 1889.
• Producing high-quality cotton clothes is the prestigious tradition of the country.

The correct answer is Barium.

Key Points

• Metal salts commonly used in firework displays include calcium chloride, sodium nitrate, barium chloride, copper chloride, etc.
• The green flame produced in fireworks is due to the presence of Barium.
• The blue flame is due to the presence of Copper.
• The orange flame is due to the presence of Calcium.
• A yellow flame is due to the presence of Sodium.
• Lithium is used to impart a red colour to fireworks.

Additional Information

• Barium (Ba):
  • The atomic number is 56.
  • It is mostly used in drilling fluids for oil and gas wells and also used in paints and glassmaking.
  • It is found in combination with other elements.
  • Barite is one of the major ores of Barium.
• Calcium (Ca):
  • The atomic number is 20.
  • Calcium provides strength to bones and teeth along with vitamins.
  • It also plays an important role in blood formation, muscle contraction, clotting of blood, etc.
  • Milk, eggs, fish, etc. are the main sources of calcium.
• Lithium (Li):
  • Atomic Number is 3.
  • Lithium is the lightest metal on the periodic table.
  • It is widely used in rechargeable batteries for mobile phones, laptops, digital cameras, etc.
• Chromium (Cr):
  • The atomic number is 24.
  • It is used in manufacturing stainless steel.
  • Chromite is the major ore of Chromium.
  • It is a blue-white hard, brittle, and very corrosion-resistant metal and is used to produce several alloys.

The set of given words are Almonds, Cashew, Walnuts all are dry-fruits. 

Apricot is the most similar to that set of word. Remaining Banana, Apple and Watermelon different from Apricot.

Hence, "Apricot" is the correct answer.

The correct answer is Chhattisgarh.

• Mahanadi river originates from the mountainous terrain of Chhattisgarh.

Key Points

• It originates from many mountain rivers with its origin water located in the Dhamtari district of Chhattisgarh.
• The river originates from an extension of the Eastern Ghats.
• It flows in Odisha where it joins the Bay of Bengal.
• Other names of Mahanadi are Kanaknandini, Chitrapalal, Mahasweta, Nilotpala etc.
• Hirakud Dam is built on the Mahanadi. It is the longest earthen dam in the world.​