At which electrode the reduction of the solution is occurring in Al-Ag cell_____________? April 15, 2025 by admin A. A B. Ag C. Both D. Neither
In which of the following type of reactions energy of reactant is greater than energy of product________________? April 15, 2025 by admin A. endothermic B. exothermic C. unpredictable D. same
Which of following metals can be displaced by all other metals from its solution ? April 15, 2025 by admin A. Ag B. A C. Au D. Cu
Which of the elements do not fall in stair case of the modern periodic table__________________? April 15, 2025 by admin A. Si B. As C. Te D. None of the above
Across short period the melting and boiling point increase upto __________________? April 15, 2025 by admin A. IIIA group B. IVA group C. VA group D. VIA group
Which of the following is the formula of chrome red ? April 15, 2025 by admin A. Pb3 O4 B. 2Pb CO3 – Pb (OH)2 C. Pb Cr O4 – Pb (OH)2 D. Pb2O
Regular coiling or zigzagging of polypeptide through hydrogen bonding is its___________________? April 15, 2025 by admin A. Quantum structure B. Secondary structure C. Tertiary structure D. Primary structure
In the van der Waals equation (P + n2a / v2) (v – nb) = nRT which of the following statement is not true ? April 15, 2025 by admin A. n2a/v correct for the intermolecular forces. B. nb correct for the volume occupied by gas molecules. C. at high densities the equation reduces to the ideal gas law D. all of the above statements are correct.
The inhaled breath of diabetics patient contain acetone. A medical student wishes to test for diabetes by asking patient to bubble their breath through a reagent ? April 15, 2025 by admin A. alkaline aquenous iodine B. aqueous bromine C. Fehling solution D. aqueous NaOH
When aquious bromine is added to aqueous phenol a creamy white ppt is obtained. What does this reaction show ? April 15, 2025 by admin A. phenol is unsaturated B. 2-bromophenol is insoluble in water C. a hydroxy group makes the benzene ring more susceptible to electrophilic attack D. acid-base reaction
