801. When two mercury drops are brought into contact they form a single bigger drop to get which of the following?
A. Minimum volume
B. Minimum surface area
C. Maximum size
D. Maximum surface area
✅ The correct answer is option B.
SSC
802. Which among the following statement is correct about Fluorescence?
A. High Energy Photon is absorbed and low energy photon is emitted
B. Low Energy Photon is absorbed and high energy photon is emitted
C. High Energy Photon is absorbed and electron is emitted
D. Low Energy Photon is absorbed and electron is emitted
✅ The correct answer is option C.
803. The inability of a body to change its state of rest or its uniform motion in a straight line is called as ________?
A. Mass
B. weight
C. Inertia
D. Friction
✅ The correct answer is option C.
804. If water is heated , it vapor pressure will ______?
A. Increase
B. decrease
C. first increase and then decrease
D. nothing happens to vapor pressure
✅ The correct answer is option A.
805. Most part of the Cosmic rays that impinge on earth‘s atmosphere are __?
A. Electrons
B. Protons
C. Neutrons
D. Gamma rays
✅ The correct answer is option B.
806. What is the approximate height of a Geostationary satellite ?
A. 981 km
B. 15000 kms
C. 35000 kms
D. 5000 kms
✅ The correct answer is option C.
807. Which among the following works while we wipe with a towel.?
A. evaporation
B. osmosis
C. capillary action
D. surface tension
✅ The correct answer is option C.
808. Newton-meters per second is represented as follows?
A. Ohm
B. Volt
C. Watt
D. Calorie
✅ The correct answer is option C.
809. The Helium atoms that have lost two electrons are called ________?
A. Alpha rays
B. Beta rays
C. Gamma rays
D. None of the above
✅ The correct answer is option A.
810. A transition from the solid to gas phase with no intermediate liquid stage is called?
A. Evaporation
B. Sublimation
C. Adsorption
D. Solid Phase extraction
✅ The correct answer is option B.