List of practice Questions

The size of the image formed by a convex mirror is always
The spherical mirror whose reflecting surface curved outward is
The type of mirror used in solar cooker is
The minimum distance of an object from the pole to obtain real image in case of a concave mirror is
What is the focal length of a plano-convex lens if 'R' is the radius of curvature and ‘n’ is the refractive index?
The magnification of a concave lens is always
Which of the following is true in case of a concave lens?
What is lens maker's formula?
The orbital with more penetration power towards nucleus is
The electronic configuration of an element is 2, 8, 6. Which one of the following element is chemically similar to the above element?
4f elements are called as
Which of the following pair of atomic numbers indicates the s-block elements?
Which is the least electronegative element among the following?
\(A Na+BHO→ C NaOH + DH2,\) in this equation the values of \(A, B, C \) and \(D\) are 
Identify the salt in the following.
Compound formed when excess \(CO_2\) is passed through lime water
Solution with pH less than 7 is
In endothermic reaction, heat is
Which one of the following metal occurs in the native form?
The more reactive metal in the activity series is
Which of the following process is used for the purification of crude metal?
Which of the following is a non metal?
Identify an acidic flux among the following.
The carbonate ore among the following is
Washing Soda is used in ____ .