Two capacitors of capacitances \(3 \mu F\) and \(6 \mu F\) are charged to potentials of \(2 V\) and \(3 V\), respectively. Now, if they are connected in parallel, the charge on each of the two capacitors, will be

The primary coil of an ideal step up transformer has 200 turns and transformation ratio is 50. The input voltage is 220 V, the voltage across secondary coil will be:

A parallel plate capacitor with air between the plates has a capacitance of 9 pF. What will be the capacitance if the distance between the plates is reduced to half and the space between the plates is filled with a dielectric of dielectric constant 7?

An earthed conductor is placed near another positively charged conductor. The net charge acquired by the earthed conductor will be :

A galvanometer shows full scale deflection for a current of 4 mA. It is converted into an ammeter of range from 0 to 8
A by using a shunt. The ratio of resistance of the galvanometer coil to the resistance of the shunt used is nearly:

Gauss theorem states that \( \oint \vec{E} \cdot d\vec{s} = 0 \). It means that

A polythene bag rubbed with a woollen jersey is found to have a negative charge of \( 3 \times 10^{-7} \text{ C} \). The number of electrons transferred from woollen jersey to the polythene would be :

Antibodies are secreted by:

During the process of spermatogenesis, the secondary spermatocytes
undergo ___________ division to produce ___________ spermatids

Read the passage carefully and answer the Questions
Carbonyl compounds such as aldehydes, ketones, and carboxylic acids play an important role in the biochemical process of plants and animal kingdom. Many aldehydes and ketones find applications in dye, perfumery and other industries.
The carbonyl carbon atom is \(s p^2\)-hybridized forming three sigma and one pi-bond with oxygen.
C-O bonds are polar bond due to high electronegativity of oxygen than carbon.
Hence the carbonyl carbon behaves as an electrophilic center and oxygen as a nucleophilic centre.
Primary and secondary alcohols yield aldehydes and ketones respectively upon oxidation with variety of oxidizing agents.
The boiling points of aldehydes and ketones differ from hydrocarbons and ethers.
Aldehydes and ketones undergo nucleophilic addition reaction due to presence of electrophilic carbonyl carbon.
Nucleophile and a proton add across the carbon oxygen double bond.
Identify the product Y in the following reaction.
\(CH_3-CH=CH-CH_2 OH \xrightarrow{\text { Pyrididium Chlorochromate }} Y\)

The force between two small charged spheres having charges of \( 0.2 \, \mu\text{C} \) and \( 0.6 \, \mu\text{C} \) placed 0.6 m apart in air will be:

The resolving power of a refracting type telescope can be increased by :

Two cells of emf \( E \) and \( 2E \) with internal resistances \( r \) and \( 3r \), respectively are connected in parallel. The emf and internal resistance of the combination is: