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
Chalk and marble are different forms of
Calcium hydrogen carbonate
Calcium carbonate
Calcium acetate
Sodium carbonate
A liquid is kept in a glass beaker. Which one of the following statements is correct regarding the pressure exerted by the liquid column at the base of the beaker?
The pressure depends on the area of the base of the beaker
The pressure depends on the height of the liquid column
The pressure does not depend on the density of the liquid
The pressure neither depends on the area of the base of the beaker nor the height of the liquid column
The instrument used for detecting the presence of electric current in a circuit is
Refractometer
Galvanometer
Viscometer
Diffractometer
Which one of the following types of radiations has the smallest wavelength?
Microwaves
Infra-red
Visible light
X-rays
Which one of the following statements about sound is NOT correct?
Sound travels at a speed slower than the speed of light
Sound waves are transverse waves
Sound waves are longitudinal waves
Sound travels faster in moist air than in dry air
