Sugar which does not give reddish brown precipitate with Fehling's reagent, is :

The incorrect statement about Glucose is :

The $${\mathrm{F}}^{-}$$ ions make the enamel on teeth much harder by converting hydroxyapatite (the enamel on the surface of teeth) into much harder fluoroapatite having the formula.

Which of the following is the correct structure of L-Glucose?

Match List I with List II .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-c3ow{border-color:inherit;text-align:center;vertical-align:top} .tg .tg-7btt{border-color:inherit;font-weight:bold;text-align:center;vertical-align:top} .tg .tg-0pky{border-color:inherit;text-align:left;vertical-align:top} LIST I LIST II A. $$\alpha$$ - Glucose and $$\alpha$$ - Galactose I. Functional isomers B. $$\alpha \text{ - Glucose and }\beta \text{ - Glucose }$$ II. Homologous C. $$\alpha \text{ - Glucose and }\alpha \text{ - Fructose }$$ III. Anomers D. $$\alpha \text{ - Glucose and }\alpha \text{ - Ribose }$$ IV. Epimers Choose the correct answer from the options given below:

The incorrect statement regarding the given structure is

Which of the following gives a positive test with ninhydrin ?

Coagulation of egg, on heating is because of :

The incorrect statements regarding enzymes are : (A) Enzymes are biocatalysts. (B) Enzymes are non-specific and can catalyse different kinds of reactions. (C) Most Enzymes are globular proteins. (D) Enzyme - oxidase catalyses the hydrolysis of maltose into glucose. Choose the correct answer from the option given below :

DNA molecule contains 4 bases whose structure are shown below. One of the structures is not correct, identify the incorrect base structure.

If \tan 15^\circ + {1 \over {\tan 75^\circ }} + {1 \over {\tan 105^\circ }} + \tan 195^\circ = 2a, then the value of \left( {a + {1 \over a}} \right) is :

The set of all values of $$\lambda$$ for which the equation $${\cos }^{2}2x-2{\sin }^{4}x-2{\cos }^{2}x=\lambda$$ has a real solution $$x$$, is :

Let f(\theta ) = 3\left( {{{\sin }^4}\left( {{{3\pi } \over 2} - \theta } \right) + {{\sin }^4}(3\pi + \theta )} \right) - 2(1 - {\sin ^2}2\theta ) and S = \left\{ {\theta \in [0,\pi ]:f'(\theta ) = - {{\sqrt 3 } \over 2}} \right\}. If $$4\beta =\sum _{\theta \in S}\theta$$, then $$f(\beta )$$ is equal to

96\cos {\pi \over {33}}\cos {{2\pi } \over {33}}\cos {{4\pi } \over {33}}\cos {{8\pi } \over {33}}\cos {{16\pi } \over {33}} is equal to :

The value of $$36\left(4{\cos }^2{9}^{\circ }-1\right)\left(4{\cos }^{2}27^{\circ }-1\right)\left(4{\cos }^{2}81^{\circ }-1\right)\left(4{\cos }^{2}243^{\circ }-1\right)$$ is :

For the system of linear equations $$\alpha x+y+z=1,x+\alpha y+z=1,x+y+\alpha z=\beta$$, which one of the following statements is NOT correct?

If A = {1 \over 2}\left[ {\matrix{ 1 & {\sqrt 3 } \cr { - \sqrt 3 } & 1 \cr } } \right], then :

Let $$S$$ denote the set of all real values of $$\lambda$$ such that the system of equations $$\lambda x+y+z=1$$ $$x+\lambda y+z=1$$ $$x+y+\lambda z=1$$ is inconsistent, then \sum_\limits{\lambda \in S}\left(|\lambda|^{2}+|\lambda|\right) is equal to

For the system of linear equations $$x+y+z=6$$ $$\alpha x+\beta y+7z=3$$ $$x+2y+3z=14$$ which of the following is NOT true ?

Let A = \left( {\matrix{ 1 & 0 & 0 \cr 0 & 4 & { - 1} \cr 0 & {12} & { - 3} \cr } } \right). Then the sum of the diagonal elements of the matrix $$(A+I{)}^{11}$$ is equal to :