NaHCO3 is chemical formula for ___________.
(A) Borax
(B) Vinegar
(C) Lime
(D) Baking soda
__________________ is a drug or substance that makes you feel relaxed and makes your body work and react more slowly.
(A) Antidote
(B) Analgesic
(C) Antihistamine
(D) Depressant
How many carbon atoms are joined in buckminsterfullerene?
(A) 30
(B) 90
(C) 60
(D) 120
Which of the following rays has the highest penetrating power?
(A) alpha ray
(B) gamma ray
(C) beta ray
(D) none of these
Alpha particles are ___________.
(A) twice the mass of beta particles
(B) negatively charged
(C) just like helium nuclei
(D) lower in ionizing power as compared to gamma rays
The color of the ocean appears blue because the sun's ray falling on it is _____.
(A) Reflection
(B) Change of direction
(C) Diffraction
(D) Scattering
What is the unit of Curie?
(A) Radioactivity
(B) Energy of gamma rays
(C) Intensity of gamma rays
(D) Work function
Heating sodium hydrochloride with ammonium chloride in a test tube is an example of
(A) Open system
(B) Closed system
(C) Isobaric system
(D) Isothermal system
What happens in all the isotopes of the same element?
(A) different atomic number and different atomic mass
(B) different atomic number and same atomic mass
(C) same atomic number but different atomic mass
(D) same atomic number and same atomic mass
Which of the following energy is most used in organic quantities?
(A) Solar Energy
(B) Petroleum Energy
(C) Atomic Energy
(D) Coal Energy
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