GK Quiz Booster

A. Uttar Pradesh, Bihar, Maharashtra, West Bengal B. Uttar Pradesh, West Bengal, Maharashtra, Bihar C. Uttar Pradesh, Maharashtra, West Bengal, Bihar D. Uttar Pradesh, Maharashtra, Bihar, West Bengal Solution: D According to the 2011 Census, Uttar Pradesh is the most populous state in India. The second most populous state is Maharashtra in India. Bihar and West Bengal are the third and fourth most populous states in India, respectively. Hence, (d) is the correct answer. Know more about States and UTs in India .

  A. Riboflavin B. Folic acid C. Thiamine D.   Retinol/ Retinal Solution: D Retinol acts as a vitamin hormone as well as a visual pigment. The scientific name of vitamin A is retinol. Night blindness is caused by deficiency of vitamin A. Vitamin A exists in three oxidation states: Retinal, Retinol and Retinoic Acid (Retin A). Hence, (d) is the correct answer.