Options:
- A. Their oxides are basic
- B. Their oxide and hydroxides are water soluble
- C. Both A & B
- D. They are found in earth
View Answer
C. Both A & B
Chemistry
Carnalite has chemical formula__________________?
Options:
- A. KCI
- B. KCI.MgCl2.6H2O
- C. Na2B4O7.10H2O
- D. CaCO3.MgCO3
View Answer
B. KCI.MgCl2.6H2O
Sodium is not observed in +2 oxidation state because of its__________________?
Options:
- A. high first ionization potential
- B. high second ioniation potential
- C. high ionic radius
- D. high electronegativity
View Answer
B. high second ioniation potential
Which one of the following statement is not correct about benzene ?
Options:
- A. On hydrogenation 208 KJ/mole is liberated
- B. C-H bond length in benzene is 1.09 A?
- C. Molecular mass of benzene is 78.108
- D. Resonance energy of benzene is 150.5 K Cal/mole
View Answer
D. Resonance energy of benzene is 150.5 K Cal/mole
Shielding effect across the period_________________?
Options:
- A. Increases
- B. Decreases
- C. Can not be predicted
- D. Remains constant
View Answer
D. Remains constant
Amphoteric exides are those which possess ____________ properties?
Options:
- A. Acidic
- B. Basic
- C. Acidic and basic
- D. Neutral and acidic
View Answer
C. Acidic and basic
The acid which is used as ink remover is_________________?
Options:
- A. Oxalic acid
- B. Succinic acid
- C. Adipic acid
- D. Acetic acid
View Answer
A. Oxalic acid
Which of the following is the strongest acid ?
Options:
- A. Water
- B. Formic acid
- C. Acetic acid
- D. Propanoic acid
View Answer
B. Formic acid
Which of the following compounds will react with Tollens reagent ?
Options:
- A. CH3-CHO
- B. CH3-CH-CH3
- C. CH3-COOH
- D. CH3-CO-CH2-CH3
View Answer
A. CH3-CHO
The carbon atom of carbonyl group is__________________?
Options:
- A. sp hybridized
- B. sp2 hybridized
- C. cp3 hybridized
- D. dsp2 hybridized
View Answer
B. sp2 hybridized