Write 'True' or 'False':
Discovery of enzyme Eco R1 led to award of Nobel Prizes to W. Arber, H.Smith and D. Nathans in 1978.

Write 'True' or 'False': Stewart Linn and Werner Arber (1963) isolated two enzymes which restricted the growth of bacteriophage in bacterium E.coli.

Name the scientists who were awarded Nobel Prize for discovery of enzyme EcoRI.

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : There are two values of angular frequency symmetrical about resonant angular frequency, for which same current can fow in an LCR-circuit. Reason : The two angular frequencies are given by omega _1 = 1 //sqrt(LC) and omega_2 = sqrt(LC)

The question given below consist of an assertion (A) and a reason ( R). Use the following key to choose the appropriate answer to these questions from the codes (a), (b), ( c) and (d) given below: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true but R is NOT the correct explanation of A. (c) A is true but R is false. (d) A is false and R is also false. Assertion: If three capacitors C_1 C_3 . Reason: 1/C_p=1/C_1+1/C_2+1/C_3 .

For the following statements write True(T) r False(F).If the statement is false,correct the statement. Smallest negative integer is -1.

Statement-1 If 10 coins are thrown simultaneously, then the probability of appearing exactly four heads is equal to probability of appearing exactly six heads. Statement-2 .^nC_r=.^nC_s implies either r=s or r+s=n and P(H)=P(T) in a single trial. (a)Statement-1 is true, Statement-2 is true: Statement-2 is a correct explanation for Statement-1 (b)Statement-1 is true, Statement-2 is true: Statement-2 is not a correct explanation for Statement-1 (c)Statement-1 is true, Statement-2 is false (d)Statement-1 is false, Statement-2 is true

Let omega!=1 be cube root of unity and S be the set of all non-singular matrices of the form [1a bomega1comega^2omega1],w h e r e each of a ,b ,a n dc is either omegaoromega^2dot Then the number of distinct matrices in the set S is a. 2 b. 6 c. 4 d. 8

Statement 1: Let vec a , vec b , vec c and vec d be the position vectors of four points A ,B ,Ca n dD and 3 vec a-2 vec b+5 vec c-6 vec d=0. Then points A ,B ,C ,a n dD are coplanar. Statement 2: Three non-zero, linearly dependent coinitial vector ( vec P Q , vec P Ra n d vec P S) are coplanar. Then vec P Q=lambda vec P R+mu vec P S ,w h e r elambdaa n dmu are scalars.