(B) Urethra

The urethra is the structure that forms a common passage for both urine and sperm in human males. It connects the urinary bladder to the external opening and serves as the channel through which urine and semen pass out of the body. The other options—Oviduct, Ureter, and Vas deferens—are not involved in the passage of urine in males. Oviduct is part of the female reproductive system, while the ureter carries urine from the kidneys to the bladder, and the vas deferens is a duct that transports sperm from the testes to the urethra.

Answer : 1152   Total positions are 8. In that boys can be arranged in 4 places and girls can be arranged in 4 places and hence this can be done in 2 ways. i.e => 4! x 4! x 2 = 24 x 24 x 2=1152.

Answer: D) diffusion Explanation: Diffusion is the spreading  - mixing of gases through molecular motion.

Answer: C) Art-22 Explanation: Article-22 :: Protection against arrest and detention. No person who is arrested shall be detained in custody without being informed of the grounds for such arrest nor shall he be denied the right to consult and to be defended by a legal Practioner of his choice.