In addition to diamond and graphite, another allotrope of carbon is Buckminster fullerene, C 60, which is in the shape of a sphere. Which one of the following statements applies…

The four statements are about the movement of blood during one complete circuit of the body.1 Blood flowing from the lungs flows through the heart twice.2 All the blood flowing…

The diagram below shows three identical resistors and a battery that supplies a constant 12 V. With the switch open, as shown, the current in resistor Y is 20 mA.…

I stop while out walking and take the bearing of a windmill and note it as θ º. I then walk 5 km north and take the bearing again –…

The general formula for the alkane series is CnH2n+2. The amide series has the same saturated structure as the alkanes but with one H substituted by the -CONH2 group. What…

The reflex arc enables the body to make rapid responses to certain stimuli. Which row in the table correctly identifies the elements 1 to 5 in the reflex arc shown…