True about carvedilol?

1q: side effects of timolol maleate ?
a. asthma
b. depression
c. tachycardia
d. hypotension
e. hypertension
answer: a , b , d .
2q: methotrexate acts by ?
a. inhibition of dihydrofolate reductase
b. aldose dehydrogenase
c. glutathione reductase
d. inhibition of sterol synthesis
answer: a .
3q: true about carvedilol ?
a. alpha 1 blocker
b. beta 1 blocker
c. beta 2 blocker
d. antioxidant
e. used in hypertension
answer: a , b , c , d , e .
4q: prophylaxis of migraine ?
a. flunarizine
b. cinarizine
c. beta blockers
d. sodium valproate
e. carbamazepine
answer: a , c , d