Showing posts from June, 2022
Que:- The value of the rate constant for first order is 2.303 × 10² second-¹ what will be the time required to reduce the concentration to 1/10th of the initial concentration? ANSWER~
Que: In a reaction 2x ------> y the concentration of X decreases from 3.0 moles per litre to 2.0 moles per litre in 5 minutes. The rate of the reaction is: A)- 0.1 mole per litre minute B)- 5 mole per litre minute C)- one mole per litre minute …
Q-) five resistors are connected in the shape of letter A .Determine the total resistance Ans- Class 10th, Physics 8 Thanks! 😊
Que: On increasing the pressure three fold, the rate of the reaction of H2S + O2 -------> product, would increase A)-3 times B)- 9 times C)-12 times D)-27 times ANSWER~
Q-) If an object 10 cm high is placed at a distance of 36 cm from a concave mirror of focal length 12 cm, find the position, nature and height of the image. Ans-Class 10th, Physics Thanks! 😊
Que: Under a given set of experimental conditions with increase in the concentration of the reactants, the rate of chemical reaction:- A) decreases B) increases C) remains constant D) first decreases and then increases Answer- [b]
Q-) A converging mirror forms a real image of height 4 cm of an object of height 1 cm placed 20 cm away from the mirror. Calculate:- i) Image distance. ii) Focal length of the mirror. Ans- Class 10th, Physics. Thanks! 😊
Q-) A 2 cm high object is placed at a distance of 32 cm from a concave mirror. The image is real, inverted and 3 cm in size. Find the focal length of the mirror and the position where the image is formed. Ans- Class 10th, Physics Thanks! 😊
Q-) An object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm. a) Draw ray diagram for the formation of image b) Calculate the image distance c) state 2 characteristics of the image formed. Ans-Class 10th, Physics Thank…
Ans- Class 10th, Physics Thanks! 😊
Q-) The perimeters of two similar triangles are 25 cm and 15 cm respectively. If one side of first triangle is 9 cm, what is the corresponding side of the other triangle? Ans- Class 10th, Maths Open this video:- THANKS! 😊
Ans- Class 10th,Physics Thanks! 😊
Three resistors are connected as shown in the diagram. Through the resistor 5 ohm, a current of 1 ampere is flowing. (i) What is the current through the other two resistors? (ii) What is the potential difference across AB and AC? (iii) What is the t…
The phenomenon observed in some plants where in parts of the sexual apparatus is used for forming embryos without fertilisation is called (a) parthenocarpy (b) apomixis (c) vegetative propagation (d) sexual reproduction Ans- Class 12th, biology Than…
Organise a discussion in your class on the topic- Are viruses living or non-living? Ans- They are neither true living nor true non living! OPEN THIS VIDEO TO KNOW THE DETAILED SOLUTION OF THIS QUESTION Thanks! 😊
A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by (a) insects (b) water (c) wind (d) animals Ans- (c) wind From chapter:- sexual re…
