Effective volume is usually taken for ____________ ?
(A) 2 moles of gas
(B) 1 mole of gas
(C) 5 moles of gas
(D) 3moles of gas
Process used to separate insoluble particles from liquids is ___________ ?
(A) Drying
(B) Filtration
(C) Sieving
(D) Extraction
Column of manometer which faces liquid is __________ ?
(A) Raised
(B) Depressed
(C) Compressed
(D) Remains same
Quantum numbers are __________ ?
(A) Arithmetical values
(B) Numerical values
(C) Leometric values
(D) Logical values
Distance at which attractive forces of hydrogen overcome repulsive forces is __________ ?
(A) 75.2pm
(B) 75.3pm
(C) 75.5pm
(D) 75.4pm
In a group, atomic radii increase due to successive increase of _________ ?
(A) Electronic shells
(B) Proton shells
(C) Neutron shells
(D) Nucleus
In SI base units, 1 Bq is equal to __________ ?
(A) 10 disintegration per second
(B) 1.5 disintegration per second
(C) 0.01 disintegration per second
(D) 1 disintegration per second
A helium nucleus comprising of two protons and two neutrons with a charge of 2e is _________ ?
(A) Beta particle
(B) Gamma particle
(C) Alpha particle
(D) Negative particle
Elements which emit natural radioactivity are known as __________ ?
(A) Radio elements
(B) Active elements
(C) Radioactive elements
(D) Nuclear elements