Can I plug DDR5 RAM into the DDR4 motherboard socket?

What Will Happen If You Plug In a DDR3 into a DDR4 Motherboard what happens if you put ddr4 in a ddr3 slot DDR3 RAM in Hindi? ddr3 fit in ddr4 in Hindi ddr4 fit in ddr3 in Hindi? what is pg slot Every DDR generation is different from the others DDR4 is not backward-compatible with DDR3 so a DDR4 DIMM will not fit on a DDR3 DIMM slot

what''s a slot Every DDR generation is different from the others DDR4 is not backward-compatible with DDR3 so a DDR4 DIMM will not fit on a DDR3 DIMM slot