std 7 sanskrut punravartn 1 sem 2

Pusa Sem 2 is a disease resistant crop variety of

LetR be the relation on the seM = {1, 2, 3, 4} given by R = {(1,2), (2,2), (1,1), (4,4), (1,3), (3, 3), (3,2)}. Then

In himgiri, karan Rai, Pusa Gaurav, Pusa sem-2, Pusa snowball k-1 , pusa a-4 and pusa komal, how many crops are diseas resistance and pest resistance respectively?

Sunita from std. X uses spectacles . Her spectacle number is -1.5 D . Find the focal length of the lens.

A point on the line (x-1)/1=(y-2)/2=(z+1)/3 at a distance sqrt(6) from the origin is (A) ((-5)/7, (-10)/7,13/7) (B) (5/7,10/7,(-13)/7) (C) (1,2,-1) (D) (-1,-2,1)

Sunita from std. X uses spectacles . Her spectacle number is -1.5 D . What type of lens is she using ?

Sunita from std. X uses spectacles . Her spectacle number is -1.5 D . Name the defect of eye from which she is suffering .

Which of the following reaction can be used to define the std enthalpy of formation of CO_(2)(g).

If alpha and beta are the roots of the equation x^(2)-7x+1=0 then find the value of (1)/((alpha-7)^(2))+(1)/((beta-7)^(2))