Control and Coordination
Which of the following is a plant hormone?
- Insulin
- Thyroxin
- Oestrogen
- Cytokinin
Solution:
Cytokinin is a phytohormone. It helps in cell division.
Correct Answer: D
The gap between two neurons is called a
- dendrite
- synapse
- axon
- impulse
Solution:
Synapse is a functional gap between dendrites of one neuron and the axon terminals of another.
Correct Answer: B
CBSE Class 10 Science 1 – Chemical Reaction and Equations – Solutions
.
Chemical Reaction and Equations – Solutions
Which of the statements about the reaction below are incorrect?
2PbO(s) + C(s)®2Pb(s)+CO2(g)
- Lead is getting reduced.
- Carbon dioxide is getting oxidised.
- Caron is getting oxidised.
- Lead oxide is getting reduced.
(a) and (b)
(a) and (c)
(a) (b) and (c)
all
Solution:
Lead oxide is getting reduced and carbon is getting oxidised, hence, (a) and (b)
are incorrect options.
Correct answer: (i)
CBSE Class 10 Science 1 – Chemical Reaction and Equations – Solutions
.
Chemical Reaction and Equations – Solutions
Which of the statements about the reaction below are incorrect?
2PbO(s) + C(s)®2Pb(s)+CO2(g)
- Lead is getting reduced.
- Carbon dioxide is getting oxidised.
- Caron is getting oxidised.
- Lead oxide is getting reduced.
(a) and (b)
(a) and (c)
(a) (b) and (c)
all
Solution:
Lead oxide is getting reduced and carbon is getting oxidised, hence, (a) and (b)
are incorrect options.
Correct answer: (i)
CBSE Class 10 Science 1 – Chemical Reaction and Equations – Solutions
.
Chemical Reaction and Equations – Solutions
Which of the statements about the reaction below are incorrect?
2PbO(s) + C(s)®2Pb(s)+CO2(g)
- Lead is getting reduced.
- Carbon dioxide is getting oxidised.
- Caron is getting oxidised.
- Lead oxide is getting reduced.
(a) and (b)
(a) and (c)
(a) (b) and (c)
all
Solution:
Lead oxide is getting reduced and carbon is getting oxidised, hence, (a) and (b)
are incorrect options.
Correct answer: (i)




