Regular coiling or zigzagging of polypeptide through hydrogen bonding is its___________________?
(A) Quantum structure
(B) Secondary structure
(C) Tertiary structure
(D) Primary structure
Which of the following is the formula of chrome red ?
(A) Pb3 O4
(B) 2Pb CO3 – Pb (OH)2
(C) Pb Cr O4 – Pb (OH)2
(D) Pb2O
Across short period the melting and boiling point increase upto __________________?
(A) IIIA group
(B) IVA group
(C) VA group
(D) VIA group
Which of the elements do not fall in stair case of the modern periodic table__________________?
(A) Si
(B) As
(C) Te
(D) None of the above
Which of following metals can be displaced by all other metals from its solution ?
(A) Ag
(B) A
(C) Au
(D) Cu
In which of the following type of reactions energy of reactant is greater than energy of product________________?
(A) endothermic
(B) exothermic
(C) unpredictable
(D) same
At which electrode the reduction of the solution is occurring in Al-Ag cell_____________?
(A) A
(B) Ag
(C) Both
(D) Neither
The use of antifreeze in the automobile radiator is an important application of__________________?
(A) constitutive property
(B) additive property
(C) colligative property
(D) intrinsic property
1 mole of electron has mass in microgram_________________?
(A) 1.008 x 10-3
(B) 5.5 x 10-4
(C) 1.84 x 10-4
(D) 1.673 x 10-3
On heating aldehydes with Fehlings solution we get a precipitate whose colour is_________________?
(A) pink
(B) black
(C) yellow
(D) brick red