Temporary magnets are used in which of the following ? All of these. Generators. Hoist. Motors. TRUE ANSWER : ? YOUR ANSWER : ?
In Bohr’s model of atomic structure, the nucleus consists of protons and neutrons. protons. electrons. electrons and protons. TRUE ANSWER : ? YOUR ANSWER : ?
The number of rings in the Bohr model of any element is determined by what? Atomic mass. Column number on periodic table. Row number on periodic table. Atomic number. TRUE ANSWER : ? YOUR ANSWER : ?
When will be the electron pair bonding occurs ? Lack holes Share electrons None of these Share holes TRUE ANSWER : ? YOUR ANSWER : ?
The electron configuration of copper is 1s2 , 2s2 2p6, 3s2 3p6 3d8, 4s1 4p 1s2 , 2s2 2p6, 3s2 3p6 3d10, 4s1. none of above. 1s2 , 2s2 2p6, 3s2 3p6 3d9, 4s2. TRUE ANSWER : ? YOUR ANSWER : ?
When the atomic magnetic moments are randomly oriented in a solid its magnetic behavior is termed as semi-magnetic. poly crystalline. paramagnetic. anti-ferromagnetic. TRUE ANSWER : ? YOUR ANSWER : ?
Cryogenics is a branch of science dealing with which of the following? Friction and wear. Crystal growth. Low temperature. High temperature. TRUE ANSWER : ? YOUR ANSWER : ?
Positive magnetostriction exists when both are correct. none of above. dipoles are attract each other. dipoles are repel other. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is the ferroelectric material ? Rochelle salt. Potassium dihydrogen phosphate. Barium titanate. All of these TRUE ANSWER : ? YOUR ANSWER : ?