Class 10 Biology11)
Which nerves transmit impulses from the cen¬tral nervous system towards muscle cells?
Class 10 Biology12)
A microscopic gap between a pair of adjacent neurons over which nerve impulses pass is called
Class 10 Biology13)
The highest coordinating centre in the human body is
Class 10 Biology14)
Main function of cerebrum is
Class 10 Biology15)
Posture and balance of the body is controlled by
Class 10 Biology16)
Breathing is controlled by which part of the brain?
Class 10 Biology17)
Which part of nervous system controls the reflex activities of the body?
Class 10 Biology18)
Which of the following acts as both endocrine and exocrine gland?
Class 10 Biology19)
Identify which of the following statements about thyroxin is incorrect?
Iron is essential for the synthesis of thyroxin.
Class 10 Biology20)
Which gland secretes the growth hormone?
A can do one-third of a work in 15 days, B can do 75% of the same work in 18 days and C can do the same work in 36 days. B and C work together for 8 days. In how many days will A alone complete the remaining work?Watch Solution
Pipes A and B can empty a full tank in 36 and 45 minutes, respectively, whereas pipe C alone can fill the tank in 15 minutes. B and C are opened together for 15 minutes, and then both are turned off and A is opened. Pipe A will empty the tank in (in minutes):Watch Solution
20 men can finish a work in 30 days. They started working, but 4 men left the work after 10 days. In how many days would the work be completed?Watch Solution
Two pipes A and B individually can fill a tank in 15 hours, and 12 hours respectively, and C can empty the full tank in 4 hour. If all three pipes are open at 8, 9, and 11 am respectively. At what time tank will be completely empty?Watch Solution
If the operating cost of 6 burners for 6 hours in 8 days is Rs. 450 then find the number of burners if used for 5 hours for 10 day with operating cost of Rs.1250.Watch Solution