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Trichoderma harzianum has proved to be a useful micro-organism for:
Cyclosporin A, used as an immuno-suppression agent, is produced from:
Given below are two statements: Statement I: Bacterial infection by Bacillus thuringiensis can kill only caterpillar larvae. Statement II: B. thuringiensis cannot kill adult moths. In light of the above statements, choose the most appropriate answer from the options given below:
Two amplifiers of voltage gain $20$ each, are cascaded in series. If $0.01\text{ V}$ a.c. input signal is applied across the first amplifier, the output a.c. signal of the second amplifier in volts is:
A ray of light traveling in a transparent medium of refractive index $\mu$ falls on a surface separating the medium from the air at an angle of incidence of $45^{\circ}$. For which of the following values of $\mu$ can the ray undergo total internal reflection?
Match Column-I with Column-II and select the correct option using the codes given below: Column-I A. Citric acid B. Cyclosporin A C. Statins D. Butyric acid Column-II 1. Trichoderma polysporum 2. Clostridium butylicum 3. Aspergillus niger 4. Monascus purpureus
Which one of the following is not a biofertilizer?
A point object is placed at a distance of 60 cm from a convex lens of focal length 30 cm. If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of 40 cm from it, the final image would be formed at a distance of:
An object is mounted on a wall. Its image of equal size is to be obtained on a parallel wall with the help of a convex lens placed between these walls. The lens is kept at distance x in front of the second wall. The required focal length of the lens will be:
Which one of the following reaction sequences is the incorrect method to prepare phenol?
Which among the following is not a prokaryote?
Stomata in grass leaf are
The correct state of hybridisation of C2, C3, C5 and C6 of the hydrocarbon $$ \overset{1}{\text{HC}} \equiv \overset{2}{\text{C}} - \overset{3}{\text{CH}}_2 - \overset{4}{\text{CH}} = \overset{5}{\text{CH}} - \overset{6}{\text{CH}}_3 $$ is in the sequence:
In the combination of the following gates, the output Y can be written in terms of inputs A and B as:
Genetic engineering has been successfully used for producing:
Which part would be most suitable for raising virus-free plants for micro propagation?
A beam of light is incident vertically on a glass slab of thickness 1 cm, and refractive index 1.5. A fraction A is reflected from the front surface while another fraction B enters the slab and emerges after reflection from the back surface. The time delay between them is:
For the logic circuit shown, the truth table is:
A p-n photodiode is made of a material with a band gap of $2.0\text{ eV}$. The minimum frequency of the radiation that can be absorbed by the material is nearly:
C and Si both have the same lattice structure, having 4 bonding electrons in each. However, C is an insulator whereas Si is an intrinsic semiconductor. This is because: