Is the following statement true or false :
A rocket can propel itself in a vaccum.

State whether the following statements are true or false : Earthquakes can be predicted in a advance.

Indicate whether the following statements are true or false . (c) Metals can be polished.

Which of the following statement are true/false ?

State whether the following statements are true or false. A person can expel all the air from lungs by a forceful expiration. A. True B. False

Write whether the following statements are True or False : Iodine can undergo sublimation.

Write whether the following statements are true or false, if false cannot correct the statement. (a) Mechanical energy can be converted into electrical energy.

State whether the following statements are true or false : ( If a statement is false , correct it and rewrite it.) : The conical cells can respond differently to red , green and blue colours.

State whether the following statements are true or false : ( If a statement is false , correct it and rewrite it.) : Nearsightedness can be corrected using spectacles having convex lenses.