Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
Which one among the following statements regarding the properties of mixtures and compounds is not correct?
A mixture shows the properties of its constituents but the properties of a compound are entirely different from its constituents
A mixture may be homogenous or heterogeneous but a compound is a homogeneous substance
The constituents of a mixture can be separated by physical methods but those of a compound cannot be separated by physical methods
Energy is either absorbed or evolved during the preparation of a mixture but not in the preparation of a compound
Which one of the following characteristics of the particle does the shaded area of the velocity-time graph shown below represent?
Momentum
Acceleration
Distance covered
Speed
A body is at rest on the surface of earth. Which of the following statements is correct?
Only weight of the body acts on it.
Only upward force acts on the body.
Frictional force acts on the body.
Net upward force is equal to the net downward force.
A pendulum beats, faster than a standard pendulum. In order to bring it to the standard beat, the length of the pendulum is to be
reduced
increased
reduced and the mass of the bob increased
reduced and also the mass of the bob reduced
Two identical blocks of ice, Aand B, float in water as shown in the figure given below.
Which one among the following statements in this regard is correct?
Block A displaces a greater volume of water since the pressure acts on a smaller bottom area
Block A displaces a greater v < tiume of water since its submerged end is lower in the water
Block B displaces a greater volume of water since its submerged end has a greater area in water
The two blocks displace equal volumes of water since they have the same specific gravity and same mass
