Question 1 :
Which of the following is a correct representation of hydroxide ions?
Question 2 :
What is the range in which a compound is said to be basic?
Question 5 :
What is the colour of the $CaCO_3$ precipitate formed when carbon dioxide is passed through lime water?
Question 10 :
What is the colour of impure salt crystals found across the world?
Question 12 :
Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9 respectively. Which solution is weakly acidic?
Question 14 :
Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9 respectively. Which solution is weakly alkaline?
Question 17 :
What happens to the stain of curry on a white cloth when soap(basic in nature) is scrubbed on it ?
Question 19 :
What is the term given to mixing of water and acid/base compound
Question 22 :
What happens when excess carbon dioxide is passed through calcium carbonate?
Question 23 :
The atmosphere of which planet is comprised of white and yellowish clouds of sulphuric acid?
Question 25 :
Name the substances which on treatment with chlorine yields bleaching powder.
Question 28 :
Five solutions A, B, C, D and E when tested with universal indicator showed pH as 4, 1, 11, 7 and 9 respectively. Which solution is strongly alkaline?
Question 31 :
If someone is suffering from acidity, which of the following will be the best remedy for him?
Question 41 :
Sodium ethoxide is formed when ethanol reacts with sodium. Is it TRUE OR FALSE ?
Question 42 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d20273b230584979ba6.JPG' />
In the above figure, identify the carbon compound.
Question 45 :
Series of compounds in which the same functional group substitutes for hydrogen in a carbon chain is called a homologous series. Is it correct ?
Question 46 :
Saturated carbon compounds are less reactive than unsaturated carbon compounds. State TRUE or FALSE.
Question 47 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d25273b230584979bac.JPG' />
In the given figure, name the carbon compound.
Question 50 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d22273b230584979ba8.JPG' />
In the above figure, identify the carbon compound.
Question 53 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d20273b230584979ba6.JPG' />
In the above figure, identify the carbon compound.
Question 55 :
Carboxylic acids are basic in nature. Is it TRUE OR FALSE ?
Question 59 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d1f273b230584979ba5.JPG' />
In the given figure, identify the carbon compound.
Question 61 :
With concentrated sulphuric acid, ethanol reduces to ethene and water. Is it TRUE OR FALSE ?
Question 63 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d2a273b230584979bb2.JPG' />
In the given figure, name the carbon compound.
Question 65 :
Saturated hydrocarbons will generally give a yellow flame with lots of black smoke while burning. Is it TRUE OR FALSE?
Question 66 :
Water is a by product when ethanol reacts with sodium. Is it TRUE OR FALSE?
Question 69 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d24273b230584979bab.JPG' />
In the given figure, name the carbon compound.
Question 70 :
Which of the following hydrocarbons undergo addition reactions: $C_2H_6$, $C_3H_8$, $C_3H_6$, $C_2H_2$, $CH_4$
Question 71 :
Carbon has a tendency to form more than 4 bonds. Is it TRUE OR FALSE?
Question 72 :
In order to attain an octet, each nitrogen atom in a molecule of nitrogen contributes _____ electrons.
Question 74 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d2b273b230584979bb3.JPG' />
In the given figure, name the compound.
Question 75 :
The ionic end of soap reacts with the oil particles. State TRUE or FALSE.
Question 77 :
Series of compounds in which the same functional group substitutes for hydrogen in a carbon chain is called?
Question 78 :
Detergents are used in making shampoos. Is it TRUE OR FALSE?
Question 80 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d2d273b230584979bb5.JPG' />
In the given figure, name the compound.
