Exchange of gases in the alveoli of lungs takes place through
Exchange of gases in the alveoli of lungs takes place through Options (a) osmosis (b) simple diffusion (c) active transport…
7 years ago
AFMC2002
A tuning fork vibrates with 2 beats in 0.04 second. The frequency of the fork is
A tuning fork vibrates with 2 beats in 0.04 second. The frequency of the fork is Options (a) 50 Hz…
7 years ago
Function of a rectifier is
Function of a rectifier is Options (a) To convert ac into dc (b) To convert dc into ac (c) Both…
7 years ago
Which of the following is a vector quantity?
Which of the following is a vector quantity? Options (a) Current density (b) Current (c) Wattless current (d) Power Correct…
7 years ago
In a uniform circular motion,
In a uniform circular motion, Options (a) Velocity and acceleration remain constant (b) Kinetic energy remains constant (c) Speed and…
7 years ago
The interatomic distances in H₂ and Cl molecules are 74 and 198 pm respectively
The interatomic distances in H₂ and Cl molecules are 74 and 198 pm respectively. The bond length of HCl is…
7 years ago
Which of the following compounds will gives positive test with Tollen’s reagent
Which of the following compounds will gives positive test with Tollen's reagent Options (a) Acetamide (b) Acetone (c) Acetic acid…
7 years ago
If Na is heated in presence of air, it forms
If Na is heated in presence of air, it forms Options (a) Na₂CO (b) Na₂O₂ (c) Na₂O (d) both Na₂O₂…
7 years ago
The maximum valency of an element with atomic number 7 is
The maximum valency of an element with atomic number 7 is Options (a) 2 (b) 5 (c) 4 (d) 3…
7 years ago
The hybridisation of carbons of C-C single bond of HC ≡C-CH =CH₂ is
The hybridisation of carbons of C-C single bond of HC ≡C-CH =CH₂ is Options (a) sp³ - sp³ (b) sp…
7 years ago