Two capacitors of capacitances 2 \( \mu\text{F} \) and 4 \( \mu\text{F} \) are connected in parallel. A charge of 6 \( \mu\text{C} \) is given to the combination which gets shared. The ratio of the charges on the two capacitors, respectively will be

Which of the following atoms has the lowest ionization energy ?

At a certain place, the horizontal component is \(B_0\) and the vertical component is \(V_0\). If \(B_0 = V_0\) then the total magnetic field at that place will be :

Keeping the voltage of the charging source constant, the separation between the plates of the capacitor is decreased by 10%. The percentage change in the energy stored in the capacitor will be:

If the temperature of a metallic conductor is increased, then the product of resistivity and conductivity

The total charge of an electric dipole is (Where 'q' is the point charge on either side of the dipole and 'e' is the charge of an electron)

A metal rod of length 10 cm and a rectangular cross-section 1cm * 1/2 cm is connected to a battery across opposite faces. The resistance will be :

In your opinion, which is the most effective way to conserve the plant diversity of an area?

Read the passage carefully and answer the questions based on the passage:
Species diversity on earth is not uniformly distributed. It is generally highest in the tropics and decreases towards the poles. Earth's fossil history reveals the incidences of mass extinctions in the past. Earth's rich biodiversity is vital for the very survival of mankind. It is believed that communities with high diversity tend to be less variable and more productive. The reasons of conserving biodiversity are narrowly utilitarian, broadly utilitarian and ethical. Biodiversity conservation may be in-situ as well as ex-situ.
How many episodes of mass extinction of species have occurred since the origin and diversification of life on earth?

The total cost function is given by \(C(x)=\frac{1}{3} x^3-5 x^2+30 x-15\) and selling price per unit is Rs. 6. The profit is maximum if the value of x is:

At what rate will the present value of a perpetuity of Rs.1000 payable at the end of each quarter be Rs.50000?

In a box containing 100 bulbs, 10 are defective. Then the probability, that out of a sample of 5 bulbs none is defective, is:

Benzene ring in phenol is expected to give the characteristic substitution or replacement reactions i.e. halogenation, nitration, sulphonation, alkylation etc. In these reactions, the attacking reagent is electrophile. The phenolic group activates the ortho and para positions in the ring due to conjugation. Disubstitution reactions are quite fast as the electron density in the ring has increased considerably. Phenols do not respond to nucleophilic substitution reactions as it is influenced by phenolic group.
Victor Meyer test gives following observations. Match List I with List II:

List-I	List-II
A. Blood red colouration	I. Tertiary alcohol
B. Blue colouration	II. Phenols
C. Colourless solution	III. Primary alcohol
D. Violet colouration with \(\text{FeCl}_3\)	IV. Secondary alcohol

Choose the correct answer from the options given below: