Question Discussion & Solution

Concept:

A functional dependency is a constraint between two sets of attributes from the database.

Explanation:

In general form, a functional dependency denoted by X -> Y between two sets of attributes X and Y that are subsets of R specifies a constraint on the possible tuples that can form a relation state r of R.

The constraint is that for any two tuples T₁ and T₂ in r that have T₁[X] = T₂[Y], they must also have T₁[Y]

= T₂[Y]. It means that values of Y component of a tuple in r depend on or are determined by the value of X component.

If a relation R contains attributes (X and Y). Then X -> Y is a functional dependency. It means X functionally determines Y in R if and only if two tuples agree on their X value, they must necessarily agree on their Y value.

The correct answer is Gypsum.

• Gypsum is available in the Nagaur district in a significant amount.

Key Points

• Nagaur is the fifth largest district in Rajasthan.
• Gypsum is composed of calcium sulphate (CaSO₄) and water (H₂O).
• Its chemical name is Calcium Sulphate Dihydrate (CaSO₄. 2H₂O).

Additional Information

• Beryllium is found in the Ajmer and Udaipur mines of Rajasthan.
• Copper is found in the Khetri copper belt in Rajasthan.
• Silver is found in Zawar mines in Udaipur.

Words are necessary part of SONG. Chorus, Music and Singer are important but without words song can’t be created.

The correct answer is Dhaka.

Key Points

• All India Muslim League was established On 30 December 1906, a conference took place under the control of Nawab Salim Ulla Khan of Dhaka.
• The constitution of this league was made in 1907 in Karachi Pakistan.
• Its first session was held in 1907 in Karachi.
• The first session of the All India Muslim League was presided over by Aga Kha.
• Muslim League supported the partition of Bengal.

Important Points

• The partition of Bengal in 1905 was introduced by Lord Curzon.
• He issued the order of partition of Bengal in July 1905 and the partition took effect from October 1905.
• The Eastern part of Bengal has the majority of the Muslim population and the western part of Bengal has the majority of the Hindu population while the central region is comprised of both religions.
• The partition of Bengal was made in order to carry out effective administration and to discourage Hindu and Muslim unity.
• River Bhagirathi served as a physical partitioner between East Bengal and West Bengal.

Anish walked 100 m towards north.

He then took a U-turn and walked 100 m.

Now he took a U-turn again and walked 102 m.

From here he turned left and walked 93 m.

Anish facing west direction.

Hence, option 2 is the correct answer.