Consider three long straight parallel wires as shown in the figure. Length of wire B is 25 cm. Choose the correct options based

(A) Net force experienced by wire B is \( 2 \times 10^{-4} \) N towards left
(B) Magnitude of repulsion force by wire A on B is \( 5 \times 10^{-4} \) N
(C) Magnitude of repulsion force by wire C on B is \( 2 \times 10^{-4} \) N
(D) Net force experienced by wire B is \( 2 \times 10^{-4} \) N towards right
Choose the correct answer from the options given below:

Two capacitors of capacitances \( C_1 \) and \( C_2 \) are connected in parallel.
If two-third of the total charge is shared by capacitor \( C_1 \), the ratio of \( C_1 \) to \( C_2 \) is given by:

For transistor action, which of the following statements are correct?
A. Base, Emitter and Collector region have similar size and doping concentrations.
B. The base must be very thin and lightly doped.
C. The emitter junction is forward biased and the collector junction is reverse biased.
D. Both emitter and collector junction all forward biased.
Choose the correct answer from the options given below:

Ferro-magnetic materials used in transformer core must have :

Which of the following atoms/ions have a ground state energy of -54.4 eV ?

Which of the following is/are responsible for the formation of Rainbow ?
(A) Dispersion of light
(B) Interference of light
(C) Reflection of light
(D) Refraction of light
Choose the correct answer from the options given below :

A magnetic needle is in the most equilibrium state in a uniform magnetic field requires 'W' units of work to turn through \( 60^\circ \). The work done to turn the magnetic needle from the position of most stable equilibrium to the most unstable equilibrium position is.

Which one of the following is caused due to point mutation?

Read the passage carefully and answer the questions
The carbonyl group of aldehydes and ketones is highly polar. The positively charged carbon is readily attacked by electron-rich nucleophile and the negatively charged oxygen atom is attacked by an electro-deficient electrophile. Aldehydes and ketones undergo nucleophilic addition reactions in the presence of acid or a base. The mechanism involves attack of a nucleophile on the electron deficient carbonyl carbon to form a tetrahedral intermediate. A new bond is formed between the carbon and oxygen. Protonation of the anion furnished by the reaction medium yields a neutral addition product. The addition product is same whether the reaction is catalyzed by acid or a base. For example in the presence of base aldehydes and ketones react with hydrogen cyanide to form cyanohydrin.
Which of the following reactions is not a nucleophilic addition reaction of aldehydes and ketones?

Match List I with List II.

LIST I	LIST II
A. Lactic acid bacteria	I. Saccharomyces cerevisiae
B. Ethanol	II. Propionibacterium sharmanii
C. Swiss Cheese	III. Lactobacillus
D. Penicillin	IV. Penicillium notatum

Choose the correct answer from the options given below:

Osmotic pressure of 0.02 M urea solution at \(27^{\circ} C\), is (given \(R=0.0821 atm L mol ^{-1} K^{-1}\) )

About __________ the first cellular forms of life appeared on earth.

The behavior and pattern of the data in a time series is NOT based on which of the following component?