3891: A wooden block is floating in water. If 4/5 of its volume is immersed in water and volume of the water displaced is 800 ml, the volume of the block is
(a) 1140 ml
(b) 200 ml
(c) 800 ml
(d) 1000 ml
3892: The Prakrit text "Gathasaptasati" is attributed to the Satavahana king:
(a) Vasishtiputra Pulumavi
(b) Hala
(c) Gautamiputra Satkarni
(d) Amaru
3893: A merchant wants a gross profit of 25 per cent on the sales. Thus the percentage he should add to the cost price will be:
(a) 25 per cent
(b) 33 per cent
(c) 66 per cent
(d) 75 per cent
3894: How did Sultan Qutb-ud-din Aibak die?
(a) He was treacherously stabbed to death by one of his ambitious nobles
(b) He was killed in a battle with Taj-u-din Yildiz, the ruler of Ghazni who entered into a contest with him over the capture of Punjab
(c) He sustained injuries while besieging the fortress of Kalinjar in Bundelkhand and succumbed to death later
(d) He died after a fall from his horse while playing Chaugan
3895: The deficiency of Vitamin D causes:
(a) Rickets
(b) Night blindness
(c) Pellagra
(d) Scurvy