Curioustab
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Aptitude
General Knowledge
Verbal Reasoning
Computer Science
Interview
Home
»
Electronics and Communication Engineering
»
Materials and Components
Assertion (A): CO2 has no resultant dipole moment but CO has a dipole moment. Reason (R): The structure of CO2 is O = C = O.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not correct explanation of A
A is true but R is false
A is false but R is true
Correct Answer:
Both A and R are true and R is correct explanation of A
← Previous Question
Next Question→
More Questions from
Materials and Components
Paramagnetic materials have permanent magnetic dipoles but interaction between neighbouring dipoles is negligible.
Assertion (A): Copper is a monoatomic solid. Reason (R): In a metal the valence electrons belong to all atoms.
If q is charge on an electron, R is radius of electron orbit and ω is angular velocity of electron rotation, the magnetic dipole moment of electron in orbit is
The classes of solid dielectrics are
For a photoconductor with equal electron and hole mobilities and perfect ohmic contacts at the ends, an increase in intensity of optical illumination results in
Assertion (A): If WF is Fermi energy, v is velocity of electron and m is mass of electron, then . Reason (R): Conductivity of a metal depends on temperature and impurity concentration.
The temperature below which certain materials are antiferromagnetic and above which they are paramagnetic is called
Assertion (A): When cathode temperature is increased from 2500 K to 2550 K, thermionic emission current may increase by about 50%. Reason (R): Thermionic emission current ∝ T2 e-Ew/kT.
Assertion (A): Silicon is the most favoured semiconductor material. Reason (R): PIV for silicon diode is more than that for germanium diode.
Assertion (A): Magnetism can be explained by the theory of magnetic domains. Reason (R): The existence of magnetic domains is evident from the Bitter powder patterns.
Discussion & Comments
No comments yet. Be the first to comment!
Name:
Comment:
Post Comment
Join Discussion
Discussion & Comments