2421: If a metal slab of size 1 m x 20 cm x 1 cm is melted to another slab of 1 mm thickness and 1 m width, then the length of the new slab thus formed will be:
(a) 200 cm
(b) 400 cm
(b) 600 cm
(d) 1000 cm
2422: How many numbers lie between 300 and 500 in which 4 comes only one time?
(A) 99
(B) 100
(C) 110
(D) 120
2423: With reference to Sufism in Indian history, consider the following statements:
1. Shaikh Ahmad Sarhandi was a contemporary of Ibrahim Lodi
2. Shiakh Nasiruddin Chirag-i-Dehlavi was a disciple of Shaikh Nizamuddin Auliya
3. Aurangzeb was contemporary of Shaikh Salim Chisti
4. The Qadiri order of Sufis was first introduced in India by Shaikh Niamtullah and Makhdum Muhammad Jilani
Which of these statements are correct?
(a) 1 and 2
(b) 1 and 3
(c) 2 and 3
(d) 2 and 4
2424: Which of the following is the correct order of increasing size of the grains of soil particles?
(A) Clay
(B) Silt
(C) Sand
(D) Gravel
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(a) A, B, C, D
(b) D, C, A, B
(c) B, C, A, D
(d) C, D, B, A
2425: The varieties of corn can be improved by which of the following methods?
(a) Dihybrid cross
(b) Back cross
(c) Double cross
(d) Natural selection