At 298 K, the value of \( -\frac{d[Br^-]}{dt} \) for the reaction \[ 5Br^- (aq) + BrO_3^- (aq) + 6H^+ (aq) \rightarrow 3Br_2 (aq) + 3H_2O (l) \] is \( x \) mol \( L^{-1} \) min\(^{-1}\). What is the rate (in mol \( L^{-1} \) min\(^{-1}\)) of this reaction?
What is X in the following reaction?
A metal catalyst (X) is used in the catalytic converter of automobiles. This prevents the release of gas Y into the atmosphere. What are X and Y respectively?
Which of the following are correct?i. Basic structural unit of silicates is –\( \text{-RSiO-} \)ii. Silicones are biocompatibleiii. Producer gas contains CO and \( \text{N}_2 \)
The volume of an ideal gas contracts from 10.0 L to 2.0 L under an applied pressure of 2.0 atm. During contraction, the system also evolved 90 J of heat. The change in internal energy (in J) involved in the system is (1 L·atm = 101.3 J):
Match the following elements with their correct classifications:
The graph shown below represents the variation of probability density, \( \Psi(r) \), with distance \( r \) of the electron from the nucleus. This represents:
If uncertainty in position and momentum of an electron are equal, then uncertainty in its velocity is:
The voltage gain and current gain of a transistor amplifier in common emitter configuration are respectively 150 and 50. If the resistance in the base circuit is 850 \(\Omega\), then the resistance in the collector circuit is:
One mole of radium has an activity of \( \frac{1}{6.3 \times 10^{37}} \) kilo curie. Its decay constant is:
The speed of the electron in a hydrogen atom in the \( n = 3 \) level is:
The ratio of the number of turns per unit length of two solenoids A and B is \(1:3\) and the lengths of A and B are in the ratio \(1:2\). If the two solenoids have the same cross-sectional area, the ratio of the self-inductances of the solenoids A and B is:
