NCERT 2022 | सूक्ष्मजीव : मित्र एवं शत्रु - L14|Microorganisms| CLASS8 विज्ञान | 8AM | Subhadra Mam

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 ?

PQRS is a cyclic quadrilateral in which PQ= x cm, QR= 16.8 cm, RS= 14 cm and PS= 25.2 cm and PR bisects QS. What is the value of x? PQRS एक चक्रीय चतुर्भुज है जिसमें PQ = x सेमी, QR = 16.8 सेमी तथा RS = 14 सेमी एवं PS = 25.2 सेमी है | PR, QS को समद्विभाजित करता है | x का मान कितना है ?

Number of hours and minutes from 6:14 am to 8:02 pm on the same days is

Find the area of polygon ABCDEF, if AD = 18cm, AQ = 14 cm, AP = 12 cm, AN = 8 cm, AM = 4 cm, and FM, EP, QC and BN are perpendiculars to diagonal AD.

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?

The ages (in years) of 50 students of a class in a school are given below: Age (in years): 14 15 16 17 18 Numbers of students: 15 14 10 8 3 Find the mean age.

Two clocks A and B being tested against a standard clock located in the national laboratory At 10.00 AM by the standard clock, the readings of the two clocks are shown in following table {:("Day","Clock A","Clock B"),(I^("st"),10:00:06,8:15:00),(II^("nd"),10:01:13,8:15:0.1),(III^("rd"),9:59:0.8,8:15:04),(IV^("th"),10:02:15,8:14:58),(V^("th"),9:58:10,8:15:02):} If you are doing an experiment that requires precision time interval measurements, which of the two clocks will you prefer ?

Calculate the pressure (in N/m^2 )exerted by a mixture of 8 g of oxygen, 14 g of nitrogen, and 22 g of carbon dioxide in a container of 30l at a temperature of 27^@C .