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which is the least reactive of all the alkali metals : Li, Na, K, Cs
Which of the following element has lowest ionization energy : Beryllium, Boron, Carbon, Oxygen
Kaolin is mineral of : Carbon, Magnesium, Silicon, Aluminium
Which element has lowest melting point : Beryllium, Magnesium, Calcium, Barium
Which of the following is a reddish brown gas : N2O, NO, N2O5, NO2
Which of the following statement is correct : Bound energy of F2 is less then Cl2, Bound energy of F2 is less then l2, Bound energy of Cl2 is less
The coordination number of Cu in [Cu(NH3)4]SO4 is : 0, 2, 4, 6
The process used to improve quality of gasoline is Called : Thermal Cracking, Reforming, Steam cracking , Combustion
The catalytic oxidation of methane produces : CO +H2O, CO2 +H2O, C +H2O, H3C-OH
Toluene HNO3 + H2SO4/100 °C : Orthonitrotolene, m - nitrotoluene, 2,4,6-TNT, P-nitrotoluene
The reactivity of Grignards reagent is due to : Polarity of Mg-xbound, Polarity of C -Mg bound, Electronegativity of halogen atom, Presence of Mg at
Alcohol obtained by fermation is only upto : 0.1, 0.12, 0.2, 0.95
According to Lewis concept, ethers behave as : Acid, Base, Solvent, Nucleophilic
Which of the following reagents will react with both aldehydes and ketones : Grignards reagents, Tollens reagent, Fehling reagent, Benedicts reagent
Which of the following is an addition polymer : Polyester, Polystyrene, Nylon 6,6, Terylene
Which is not Calcareous material : Clay, Limestone, Marble, Chalk
The PH of unpolluted rain water should be : 5, 5.6, 6.5, 7
Period V in modern Periodic table contains how many element : 32, 18, 10, 8
Element of group IA are called : Alkali metals, Metalloids, Alkaline earth metals, Coinage metals
Chile saltpetre has the chemical formula : NaNO3, KNO3, NaB4O7, Na2CO3H2O
Tincal is a mineral of : Al, B, Si, C
The brown gas formed when metal reduces HNO3 is : N2O5, N2O3, NO2, NO
Which is the strong acid : HClO, HClO2, HClO3, HClO4
The colour of transition metal complexes is due to : d-d transition of electrons, Paramagnetic nature of transition element , Ionization, Loss of s-elect
Vital force theory was rejected by : G.N.Lewis, Fredrick wohler, Scientist of 20th century, Greek Philosophers
Synthetic rubber is made by polymerization of : Chloroform, Acetylene, Divinyl acetylene, Chloroprene
Aromatic hydrocarbons are derivates of : Normal series of paraffins, Alkene, Benzene, Cyclohexane
Which of the following reacts with Grigards reagent to give primary Alcohols Epoxide, peroxide, Super oxide, Hydrogen oxide
Which compound show Maximum hydrogen bounding with water : CH3OH, C2H5OH, CH3-O-CH3, C6H5OH
Which of the following reagents will react with both aldehydes and Ketones : Grignards reagents, Tollens reagent, Fehling reagent, Benedicts reagent
Acetic acid is manufactured by : Distillation, Fermentation, Ozonalysis, Esterification
The reaction between fat and NaOh is called : Esterification, Hydrogenolysis, Fermentation , Saponification
The number of zones through which the charge passes in a rotary kiln is : 4, 3, 2, 5
Ecosystem is a smaller unit of : BioSphere, Lithosphere, Atmosphere, Hydrosphere