1.Which type of electromagnetic radiation has the highest energy?
A. UV
B. Radio
C. Visible
D. Gamma
2.Which one of the following cubic unit cells contains only two atoms?
A. Simple cubic cells
B. Face centered cubic cells
C. Body centered cubic cells
D. None of these
3.In an electrochemical cell, what is the purpose of the salt bridge?
A. It is the anode
B. It is the Cathode
C. It permits the migration of ions between the half-cells
D. It permits the Mixing of solutions between the half-cells
4.A catalyst will affect the rate of the forward reaction by changing the \
A. Activation energy
B. Heat of reaction
C. Heat of formation
D. Potential energy of the products
5.When a reaction is exothermic and the products have more entropy than the reactants,the reaction is
A. Spontaneous, with a positive G
B. Spontaneous, with a negative G
C. Non Spontaneous, with a positive G
D. Non Spontaneous, with a negative G
6.Which factors must be equal when a reversible chemical process reaches equilibrium?
A. Mass of the reactants and mass of the products
B. Rate of the forward reaction and rate of the reverse reaction
C. Concentration of the reactants and concentration of the products
D. Activation energy of the forward reaction and activation energy of the reverse reaction
7.Electronegativity of an atom is
A. Tendency to attract electron pair in its bonded state
B. Tendency to attract electron pair in its isolated state
C. A fixed quantity
D. charge of anion in a ionic bond
8.Covalent character increases with
A. Increasing size of the cation
B. Decreasing size of the cation
C. Decreasing size of the anion
D. Decreasing charge of the anion
9.Which among the following form stable superoxide
A. Hydrogen
B. Lithium
C. Sodium
D. Potassium
10.Which of the following must be true for an optically active compound?
A. The molecular configuration is achiral
B. The molecular configuration is chiral
C. The compound is a recemic mixture of enantiomers
D. The molecular configuration must have two or more stereogenic centers
11.Which types of salt produce crackcling noise in dry heating test?
A. Salts which have lot of water of crystallisation
B. Salts which are hygroscopic
C. Salts which have lost water of crystallisation
D. Salts which entrap mother liquor in crystals
12.When a substance burns, it gives off both:
A. Radioactivity and smoke
B. Heat and light
C. Oxygen and Carbon dioxide
13.The most common carbohydrate found in a fruit is
A. Glucose
B. Fructose
C. Cellulose
14.What is the molecular formula of calcium carbonate?
A. CaO
B. CaO2
C. CaCo
D. CaCo3
15.What is a positively charged ion called?
A. Anion
B. Neutron
C. Positron
D. Cation
16.What is the chemical symbol of gold?
A. Ag
B. Au
C. Pt
17.Which out of potassium ion, fluoride ion and ammonia molecule can form co-ordinate bond with boron trifluoride?
A. Only ammonia
B. Ammonia and fluoride ion
C. Only fluoride ion
18.The Ph value of human blood is__?
A. 7.40
B. 7
C. 0
D. 8
19.For purifying drinking water alum is used
A. For coagulation of mud particles
B. to kill bacteria
C. to remove salts
D. to remove gases
20.What is the chemical name of Plaster of Paris?
A. Calcium Carbonate
B. Calcium Sulphate
C. Calcium Hypochlorite
21.Which of the following is a non metal that remains liquid at room temperature?
A. Phosphorous
B. Bromine
C. Chlorine
D. Helium
22.Which gas is commonly known as 'Laughing Gas' ?
A. Ozone
B. Methane
C. Nitrous Oxide
D. Carbon dioxide
23.Which of the following type of glass is generally used in the making of cut-glass objects?
A. Crookes glass
B. Lead potash glass
C. Borosil glass
D. Soft ordinary glass
24.Which of the following represents the iso-butyl radical ?
A. Ethane
B. Methane
C. Ethyne
D. Benzene
25.Which of the following sodium salt on treatment with soda lime does not produce alkane?
A. Sodiumethanoate
B. Sodium isobutyrate
C. Sodium propanoate
D. Sodium methanoate
A. UV
B. Radio
C. Visible
D. Gamma
2.Which one of the following cubic unit cells contains only two atoms?
A. Simple cubic cells
B. Face centered cubic cells
C. Body centered cubic cells
D. None of these
3.In an electrochemical cell, what is the purpose of the salt bridge?
A. It is the anode
B. It is the Cathode
C. It permits the migration of ions between the half-cells
D. It permits the Mixing of solutions between the half-cells
4.A catalyst will affect the rate of the forward reaction by changing the \
A. Activation energy
B. Heat of reaction
C. Heat of formation
D. Potential energy of the products
5.When a reaction is exothermic and the products have more entropy than the reactants,the reaction is
A. Spontaneous, with a positive G
B. Spontaneous, with a negative G
C. Non Spontaneous, with a positive G
D. Non Spontaneous, with a negative G
6.Which factors must be equal when a reversible chemical process reaches equilibrium?
A. Mass of the reactants and mass of the products
B. Rate of the forward reaction and rate of the reverse reaction
C. Concentration of the reactants and concentration of the products
D. Activation energy of the forward reaction and activation energy of the reverse reaction
7.Electronegativity of an atom is
A. Tendency to attract electron pair in its bonded state
B. Tendency to attract electron pair in its isolated state
C. A fixed quantity
D. charge of anion in a ionic bond
8.Covalent character increases with
A. Increasing size of the cation
B. Decreasing size of the cation
C. Decreasing size of the anion
D. Decreasing charge of the anion
9.Which among the following form stable superoxide
A. Hydrogen
B. Lithium
C. Sodium
D. Potassium
10.Which of the following must be true for an optically active compound?
A. The molecular configuration is achiral
B. The molecular configuration is chiral
C. The compound is a recemic mixture of enantiomers
D. The molecular configuration must have two or more stereogenic centers
11.Which types of salt produce crackcling noise in dry heating test?
A. Salts which have lot of water of crystallisation
B. Salts which are hygroscopic
C. Salts which have lost water of crystallisation
D. Salts which entrap mother liquor in crystals
12.When a substance burns, it gives off both:
A. Radioactivity and smoke
B. Heat and light
C. Oxygen and Carbon dioxide
13.The most common carbohydrate found in a fruit is
A. Glucose
B. Fructose
C. Cellulose
14.What is the molecular formula of calcium carbonate?
A. CaO
B. CaO2
C. CaCo
D. CaCo3
15.What is a positively charged ion called?
A. Anion
B. Neutron
C. Positron
D. Cation
16.What is the chemical symbol of gold?
A. Ag
B. Au
C. Pt
17.Which out of potassium ion, fluoride ion and ammonia molecule can form co-ordinate bond with boron trifluoride?
A. Only ammonia
B. Ammonia and fluoride ion
C. Only fluoride ion
18.The Ph value of human blood is__?
A. 7.40
B. 7
C. 0
D. 8
19.For purifying drinking water alum is used
A. For coagulation of mud particles
B. to kill bacteria
C. to remove salts
D. to remove gases
20.What is the chemical name of Plaster of Paris?
A. Calcium Carbonate
B. Calcium Sulphate
C. Calcium Hypochlorite
21.Which of the following is a non metal that remains liquid at room temperature?
A. Phosphorous
B. Bromine
C. Chlorine
D. Helium
22.Which gas is commonly known as 'Laughing Gas' ?
A. Ozone
B. Methane
C. Nitrous Oxide
D. Carbon dioxide
23.Which of the following type of glass is generally used in the making of cut-glass objects?
A. Crookes glass
B. Lead potash glass
C. Borosil glass
D. Soft ordinary glass
24.Which of the following represents the iso-butyl radical ?
A. Ethane
B. Methane
C. Ethyne
D. Benzene
25.Which of the following sodium salt on treatment with soda lime does not produce alkane?
A. Sodiumethanoate
B. Sodium isobutyrate
C. Sodium propanoate
D. Sodium methanoate
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