NCERT 2022 | सूक्ष्मजीव : मित्र एवं शत्रु - L7 |Microorganisms| CLASS8 विज्ञान | 8AM | Subhadra Mam

Questions based on L7 and L8

Two cars A and B leave Delhi at 8:30 a.m. and 9 a.m. for Shimla, respectively. They travel at the speeds of 40km/h and 50 km/h respectively. How many kilometres away from Delhi will the two cars be together? दो कारें A तथा B दिल्ली से क्रमशः 8: 30 a.m एवं 9 a.m में शिमला जाने के लिए खुलती है | वे क्रमशः 40 किमी/घंटा तथा 50 किमी/घंटा की चाल से यात्रा करती हैं | दोनों कारें दिल्ली से कितने किलोमीटर की दूरी पर एक साथ होंगी ?

Let D = 3, L = 7 and A = 8. Find the other digits in the sum {:("M A D"),(+"A S"),(+" A"),(ulbar("B U L L")):}

What volume of oxygen gas (O_(2)) measured of 0^(@)C and 1 am needed to burn completely 1 L of propane gas (C_(3) H_(8)) measured under the same conditions?

A person from A starts to walk at 7 am and reaches B at 11 am similarly A person from B starts to walk at 8 am and reaches A at 11:30 am. Find the time at which the meet each other.

A person starts to walk at 7 am from A and reaches B at 11 am and another person starts to walk from B at 8 am and reaches A at 11:30 am. Find the time at which they will meet each other.

A person from A starts to walk at 7 am and reaches B at 1 pm and another person starts to walk from B at 8 am and reaches A at 11 am. Find the time at which they meet each other.

If the A.M of roots of quadratic is (delta)/(5) and AM of their reciprocal is (8)/(7) then the quadratic equation is B find the minimum value of x^(2)+2xy+3y^(2)-6x-2y

If the A.M. of the roots of a quadratic equation is (8)/(5) and the A.M. of their reciprocals is (8)/(7) then the equation is

The number of boys and girls in a class are in the ratio 7:5. The number of boys is 8 more than the number of girls.What is the total class strength?