Q541. Which country accepted the policy of Dual Citizenship?
[A] Australia
[B] Canada
[C] U.S.A
[D] India
Q542. Sound waves cannot travel in
[A] Glass
[B] Vacuum
[C] Hydrogen gas
[D] Water
Q543. Who was the first Indian to qualify for the Olympics?
[A] PT Usha
[B] Shiny Abraham
[C] Jyotirmony Sikdar
[D] Karnam Malleshwari
Q544. The deficiency of which nutrient causes night blindness?
[A] Proteins
[B] Vitamin K
[C] Vitamin A
[D] Vitamin C
Q545. Television was invented by
[A] J.L Baird
[B] R.A Millikan
[C] Lawrence
[D] Louis Braille
Q546. Which is the point from where an azimuth originates?
[A] West
[B] East
[C] South
[D] North
Q547. Which of the following is the National Aquatic animal of India?
[A] Dugong
[B] Dolphin
[C] Sea Turtle
[D] Salt water crocodile
Q548. Kumbh Mela is held in every ___________ years.
[A] 7
[B] 12
[C] 5
[D] 10
Q549. Which of the following acids is present in ant bites?
[A] Malic acid
[B] Nitric acid
[C] Formic acid
[D] Perchloric acid
Q550. Which among the following noble gas has highest molar mass?
[A] Ar Â
[B] Ne Â
[C] Xe
[D] Kr Â