Class 12th

Given below are two statements :
Statement I : Aspirin and Paracetamol belong to the class of narcotic analgesics.
Statement II : Morphine and Heroin are non-narcotic analgesics.
In the right of the above statements, choose the correct answer from the options given below.

The major product of the following chemical reaction is :
CH₃CH(CH₃)CH=CH₂ + HBr --(C₆H₅CO)₂O₂--> ?

The following solutions were prepared by dissolving 10 g of glucose (C₆H₁₂O₆) in 250ml of water (P₁), 10 g of urea (CH₄N₂O) in 250ml of water (P₂) and 10 g of sucrose (C₁₂H₂₂O₁₁) in 250ml of water (P₃). The right option for the decreasing order of osmotic pressure of these solutions is :

Identify the compound that will react with Hingsberg's reagent to give a solid which dissolves in alkali.

The molar conductance of NaCl, HCl and CH?COONa at infinite dilution are 126.45, 426.16 and 91.0 cm² mol¯¹ respectively. The molar conductance of CH?COOH at infinite dilution is. Choose the right option for your answer.

The correct structure of 2, 6-Dimethyl-dec-4-ene is :

The RBC deficiency is deficiency disease of :

An electric dipole is placed at an angle of ${30}^{?}$ with an electric field of intensity $2*{10}^5{\mathrm{N}\mathrm{C}}^{-1}$ . It experiences a torque equal to 4Nm. Calculate the magnitude of charge on the dipole, if the dipole length is 2 cm.

The ratio of frequencies of fundamental harmonic produced by an open pipe to that of a closed pipe having the same length is

An inductor of inductance L, a capacitor of capacitance C and a resistor of resistance ' R' are connected in series to an ac source of potential difference ' V volts as shown in figure. Potential difference across L, C and R is 40 V, 10 V and 40 V, respectively. The amplitude of current flowing through LCR series circuit is 10√2 A. The impedance of the circuit is: