मानव के हृदय में कितने वाल्व होते है ? - How many valves are there in human heart? - Manav Ke Heart Me Kitne volve Hote Hai ? General Science in hindi, Biology 3 question answers in hindi pdf 2 questions in hindi, Know About 4 General Science online test General Science notes in hindi quiz book 1
No problem this mock test
2 hote hi
Im sure two valve and four chembers