Question Discussion & Solution

The first letter in each group is obtained by adding five letters to the first letter of the previous group.

W + 5 = B, B + 5 = G, G + 5 = L, L + 5 = Q, Q + 5 = V

The second letter in each group is opposite to the first letter of that group according to their positional value.

W ↔ D, B ↔ Y, G ↔ T, L ↔ O, Q ↔ J, V ↔ E

The numbers in in each group are obtained by adding two and its multiple at each step respectively.

4 + 2 = 6, 6 + 4 = 10, 10 + 6 = 16, 16 + 8 = 24, 24 + 10 = 34

Soil is one of the most important natural resources as mankind is dependent on soil for food. The soils of Rajasthan have developed under the arid and humid climate over the bedrocks of complex nature predominately through the process of Lateralization.

Classification: The old system of classification was developed by scientists (Thorpe & Smith) of the U.S Department of Agriculture in 1949. The classification is based upon differences in climate and mineralogy. As per this system, soils of Rajasthan can be classified into 8 types:

1. Desert Soils
2. Dunes and Associated Soils
3. Brown Soils
4. Sierozems
5. Red Loams
6. Hill Soils (Lithosols)
7. Saline Sodic Soils (Solonchaks)
8. Alluvial Soils/and Black Soils

Brown soil:

• Brown Soils Major area of these soils is in the catchment area of Banas River.
• Districts – Tonk, Bundi, Sawai Madhopur, Bhilwara, Udaipur, and Chittorgarh
• Annual Rainfall – 50 cm to 75 cm is sufficient for Kharif crops.
• Texture – Sandy loam to clay loam.
• Colour – Ranges from greyish brown to yellow-brown.
• They are rich in calcium salts but have poor organic matter
• The use of fertilizers becomes essential to get a good harvest
• As the groundwaters are saline, soils irrigate with these waters have accumulated salts
• Tank irrigated soils have also developed a problem of the high water table.
• Rabi crops are grown under irrigation.

Hence, option 1 is the correct answer.

CONCEPT:

Nuclear reactor:

• It is a device in which a nuclear reaction is initiated, maintained, and controlled.
• It works on the principle of controlled chain reaction and provides energy at a constant rate.

EXPLANATION:

• Uranium is used as a fuel in a nuclear reactor.
• The Process is illustrated by the diagram, where the mass difference between the reactants (Uranium) and the products (Krypton and Barium) is converted into energy.

Five students – M, Q, U, X, and Z are compared.

1. Weight of Z is less than only two students. _ > _ > Z > _ > _

2. Weight of Q is greater than Z and Weight of Q is less than only U.

U > Q > Z

From 1 and 2, we get:

U > Q > Z > M/X > M/X

The correct answer is one party to another party to marriage or parents of one party to another party to the marriage.

Key Points

Dowry System:

• Dowry, or the custom of accepting gifts by the bridegroom’s parents from to bride’s parents as part of a marriage settlement.
• Dowry is the money, valuables, goods, estate or property which the bride party gives to the groom's party in exchange for marriage.
• The Dowry system is most prevalent in village areas where people are uneducated and a girl is considered as a burden on their family.
• With upcoming times, this practice is not that common in urban areas.
• To prevent the system of dowry, The Dowry Prohibition Act, 1961 was enacted.
• Section 2 of the Prohibition of Dowry Act defines dowry as any property or valuable security given or agreed to be given either directly or indirectly.
• Dowry is given by one party to a marriage to the other party to the marriage or by the parents of either party to a marriage or by any other person, to either party to the marriage or to any other person.