The respiratory system (involving inhalation and exhalation processes) is responsible for taking in oxygen rich air and expelling carbon dioxide rich air. Which of the following is the sequence in which events occur in the inhalation process? P : Air pressure inside your lungs drops. Q : The diaphragm contracts. R : Air from outside rushes into your lungs. AP, Q, R BQ, P, R CR, P, Q DQ, R, P
The Ashokan pillar inscriptions of western India are written in this script. It is written from right to left. What is this script called? ABrahmi BPrakrit CKharosthi DDevnagri
Select odd one out. A B C D
DIRECTION : Mark the word with the correct spelling for the question. AAllergy BAlergy CAllargy DAlerrgy
Raju, a farmer gets his field checked for soil toxicity. The report shows high level of toxic chemicals in his field. How can these toxic chemicals in the soil harm? AThey change the climate of the area. BThey are absorbed by food plants grown in the soil making them unfit for consumption. CThey purify groundwater. DThey get evaporated in the air causing air pollution.
Which of the following represents a pair of 'jawless fishes'? APiranha and Red Herrings BLampreys and Sharks CLampreys and Hagfish DAngel fish and Rohu
Which of the following statements is not true about road safety of a pedestrian? AWalk on any side of the road if there are footpaths BCross the road infront of or in between parked vehicles CWear light coloured dresses during night DCross the road when the vehicles are at a safe distance.
Rakhi travelled a total distance of 15 km. If she covered 4x km by walk, 2y km by cycle and remaining by bus. The distance she covered by bus (in an algebraic expression) is ___________. A(15 + 4x - 2y) km B(15 - 4x - 2y) km C(15 - 4x + 2y) km D(4x + 2y - 15) km
Physical changes are changes affecting the form of a chemical substance, but not its chemical composition. Which of the following can bring about a change in the physical state of matter? AWhen energy is taken out of the system BWhen energy is added to the system CBoth A and B DEnergy change is not required.
He was an English physicst whose most notable achievements were in the precise measurement of time and the determination of the speed of light. He was the first to determine the speed of light using a laboratory apparatus? Who is he? AIsaac Newton BLouis Essen CB. Halt DNone of these