Question 1 :
Which of the elements show passivity when treated with conc. HNO3?
Question 5 :
Which one of the following raw material is not present in the cement ?
Question 9 :
Which one of the following explain the shape of orbitals _________________?
Question 10 :
Which one of the following is not a periodic property ?
Question 13 :
The nutrients which are required in very small amount for the normal growth of plants are called_________________?
Question 22 :
Which one of the following is also known as lactic acid ?
Question 23 :
Which of the following is an example of liquid in gas solution?
Question 24 :
The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called__________________?
Question 25 :
Which one of the following is the correct sequence according to atomic weights?
Question 26 :
Boron is non metal while other elements of IIIA group are metals. This is because______________?
Question 28 :
An element having low value of ionization energy and low value of electron affinity is likely to belong to__________________?
Question 31 :
Ethanal is prepared industrially by air oxidation of ethylene using palladium chloride as catalyst and _________ as promoter?
Question 32 :
Which of the following is not a condition for the formation of smog ?
Question 37 :
Alkali and alkaline earth metals impart colours when heated over burner. It is due to______________?
Question 39 :
Which of the following is different with respect to physical appearance ?
Question 41 :
How many isomeric aldoses are possible for the molecular formula C6H12O6?
Question 48 :
In modern periodic table all the leements are arranged in ascending order of__________________?
Question 50 :
58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________?
