
Consider the following statements:
. Ozone is used as a germicide, air, and water purifiers, in making artificial silk, etc.
. Bitterness in the onions is due to the presence of sulfur compounds.
. Helium is used in filling the tires of the aircraft.
Which of the statements given above are correct?

Important Questions on Practice Set
Consider the following statements:
1. Tendons connect bone to muscles.
2. Bone forming cells are osteoblasts.
3. Ligament connects bone to bone.
Which of the statements given above are correct?

Consider the following statements:
1. When a beetle moves along the sand within a few tens of centimetres of a sand scorpion, the scorpion immediately turns towards the beetle and dashes towards it.
2. When a beetle disturbs the sand, it sends pulses along the sand's surface. One set of pulses is longitudinal while the other set is transverse.
Which of the statements given above is/are correct?

Consider the following statements:
. The rate of diffusion of liquids is higher than that of solids.
. In the liquid state, particles move freely and have greater space between each other as compared to particles in the solid state.
Which of the statements given above is/are correct?

Consider the following statements:
. Atavism is the reappearance of disappeared ancestral characters.
. Third molars and hair on the body are examples of atavism.
. Atavism is the disappearance of vestigial structures.
Which of the statements given above is/are true?

Consider the following statements:
. The susceptibility of a paramagnetic material varies inversely with the temperature.
. The susceptibility of a diamagnetic material is small and negative.
. The relative permeability of a diamagnetic material is less than unity.
. The relative permeability of a paramagnetic material is greater than unity.
Which of the statements given above are correct?


Consider the following statements regarding diamond:
1. It is an allotrope of silicon.
2. It is a bad conductor of heat and electricity.
3. It is the hardest substance.
4. It burns to produce carbon dioxide.
Which of the statements given above are correct?

