84- The sum of the kinetic energy and potential energy of an oscillating body is:
A. Minimum in the beginning
B. Maximum at midway of the path
C. Constant at all points
D. Maximum in the beginning
View Answer
Answer : C. Constant at all points
Description
85- Which term in psychology is generally used to refer to emotional disorders such as anxiety, depression and phobia?
A. Psychs
B. Hypnosis
C. Neurosis
D. Mental illness
View Answer
Answer : C. Neurosis
Description
86- All alkali metals react with water to form:
A. Oxides
B. Peroxides
C. Hydroxides
D. Hyper oxides
View Answer
Answer : C. Hydroxides
Description
87- LASER is an acronym for:
A. Light Absorption by Standard Emission of Radiation
B. Light Amplification by Standard Emission of Light
C. Light Absorption by Standard Emission of Radiation
D. Light Amplification by Stimulated Emission of Radiation
View Answer
Answer : D. Light Amplification by Stimulated Emission of Radiation
Description
88- If carbon dioxide is passed through lime water for a long time, the cloudy white color (initially formed) disappears because of the formation of:
A. Calcium hydroxide
B. Calcium bicarbonate
C. Calcium carbonate
D. Calcium sulphate
View Answer
Answer : B. Calcium bicarbonate
Description
89- Articles made of copper and bronze slowly tarnish in air and turn green, the green colour is due to the formation of:
A. Copper oxide
B. Copper sulphide
C. Copper carbonate
D. All of these
View Answer
Answer : C. Copper carbonate
Description
90- Light year is related to:
A. Time
B. Distance
C. Dry material
D. Speed
View Answer
Answer : B. Distance
Description
91- The word ceramic means:
A. Dry material
B. Tyndall effect
C. Hard material
D. Burnt material
View Answer
Answer : D. Burnt material
Description
92- The operation of solar cells is based on:
A. Tyndall effect
B. Thermal emission
C. Laser technology
D. Photoconduction
View Answer
Answer : D. Photoconduction
Description
93- The minimum number of bits required to store hexadecimal number AF is:
A. 2
B. 4
C. 8
D. 16
View Answer
Answer : C. 8
Description
94- Which of the following minerals is most resistant to chemical weathering?
A. Hornblende
B. Potassium feldspar
C. Quartz
D. Olivine
View Answer
Answer : C. Quartz
Description
95- An igneous rock contains a radioactive isotope that has a half-life of 10 million years. Careful analysis shows that only one quarter of the original concentration of the parent isotope is left. How old is this igneous rock?
