Last seen: Nov 14, 2021
Correct answer: (1) headache
Correct answer: (3) Cocaine is given to patients after surgery as it stimulates recovery
Correct answer: (3) Typhoid
Correct answer: (3) The causative HIV retrovirus enters helper T - lymphocytes thus reducing their numbers
Correct answer: (2) Saliva of infected female Anopheles mosquito
Correct answer: (1) Computerised axial tomography (CAT) shows detailed internal structure as seen in a section of body
Correct answer: (a) The reaction mixture will equilibrate to form more reactant species Explanation: ∵ = 0.33 ⇒ K < Q i.e., reaction moves...
Correct answer: (d) Kp = Explanation: PCl5(g) ⇌ PCl3(g) + Cl2(g) Initial 1 0 0 At. eqn. 1-α α ...
Correct answer: (b) atm-2 Explanation: Kp → (atm)Δng = (atm)3-5 = (atm)-2
Correct answer: (c) 0.01 Explanation: Ksp(AgBr) < Ksp(AgCl) Therefore, AgBr will precipitate first and at that time all Cl- will be present.
Correct answer: (a) 1.0 × 104 Explanation: HA + BOH ⇌ BA + H2O ∴ KH = The inverse of KH is Kc = = = 1.0 × 104
Correct answer: (a) 1.8 × 10-6 Explanation: PbSO4(s) ⇌ Pb2+(aq) + SO42-(aq)(Ksp) .....(i) HSO4-(aq) ⇌ H+(aq) + SO42-(aq)(Ka) .....(ii) Subtr...
Correct answer: (b) 6.75 × 10-4 Explanation: Kw = Ka x Kb Kb = 10-10.83 = 1.48 × 10-11 ∴ Ka = = = 6.75 × 10-4
Correct answer: (c) 3.7 × 10-2 M Explanation: The two Ksp values do not differ very much. So it is a case of simultaneous equilibria, where the co...
Consider the velocity-time graph of a body shown in figure. figure.png The body has an initial velocity u at a point A and then its velocity c...
(a) When a body moves in a circular path with uniform speed (constant speed), its motion is called uniform circular motion. For e.g. (i) Artificial...
Initial velocity, u = 0 m/s Final velocity, v = 72 km/h = 20 m/s Time, t = 10s (i) Acceleration = So, a = = = m/s2 = 2 m/s2 (ii) Avera...
(a) Suppose a body has an initial velocity ‘u’ and a uniform acceleration’ a’ for time ‘t’ so that its final velocity becomes ‘v’. Let the distance...
(a) The consider a body having the initial velocity ‘u’. Suppose it is subjected to a uniform acceleration ‘a’ so that after time ’t’ its final vel...
(a) v = u + at is the first equation of motion. It gives the velocity acquired by a body in time t when the body has initial velocity u and uniform ac...